Hot Process Oatmeal Honey Soap (Crock Pot Method)

Homemade Oatmeal & Honey Soap Hot Process Method

This classic, gentle soap contains finely ground oatmeal and raw honey. Its creamy mildness makes it perfect for everyday use by those with sensitive skin.

By cooking soap in a crock pot (hot process method), you’ll bypass the several weeks of waiting time that cold process recipes usually require and can use your homemade soap right away!

 

Links in this post to Bramble Berry and Amazon.com are affiliate links. That means if you click on one and make a purchase, I earn a small commission for sending a customer their way. This costs you nothing extra, but does help supply me with a small income and lets me keep doing what I do. Thank you! :)

 

Hot Process Oatmeal Honey Soap:

Oil Portion (27.5 ounces total oils):

Liquid & Lye Portion:

After cook time, combine and add:

Notes & Substitution Ideas:

*If you’re allergic to coconut oil, try using babassu oil instead. You will need to change the lye amount to 3.8 ounces, but otherwise follow the recipe as is.

*If you don’t have castor oil on hand, you can replace it with meadowfoam seed oil. (Both of these oils help boost lather a little bit.) If neither one is available, you can just use more sweet almond oil instead. If you can’t use sweet almond oil, try avocado, sunflower, or even more olive oil instead. It’s such a small amount, it probably won’t change much, if any, but just in case – run your new recipe through a lye calculator and see how much lye they suggest.

*The tamanu oil can be replaced by most any light oil or melted shea/mango/cocoa butter. Its purpose in the recipe is to add extra moisturizing skin benefits. Since the soap is fully cooked when you add this extra oil, you don’t have to adjust the lye amount if you omit or change it up.

This recipe was made in a 4 quart slow cooker/crock pot. (THIS is the exact model I have.) My crock pot runs a little warm and heats up fast. If you have an older crock pot that’s slow to warm up, you may need to preheat it before adding your oils.

 

DO NOT USE ANY TYPE OF ALUMINUM WHILE MAKING SOAP. It will react negatively with the lye.

 

How to Make Oatmeal & Honey Soap In Your Crock Pot or Slow Cooker

Directions:

Step 1 – Making the lye solution:

When working with lye, you’ll need to wear a pair of rubber gloves, long sleeves, and safety goggles – in case of splashes. Keep children and pets out of the room while you work.

Fill a heat proof plastic or stainless steel container with 10 ounces of water, by weight, and set it down into your sink or on a safe spot on your counter.

Using a digital scale, weigh out 3.9 ounces of sodium hydroxide (lye) in a separate container. (If your lye is lumpy, don’t break up the clumps and use them. This indicates that moisture has gotten into your lye and it probably won’t measure or perform properly in your recipe.)

Pour the lye into the water and stir until completely dissolved. The lye will get extremely hot and give off very strong fumes during this time. Work at arm’s length in a well ventilated room and avoid breathing the fumes in directly.

Set the lye solution aside to cool for around ten or fifteen minutes.

 

Step 2 – Measuring the oils:

Using a digital scale, weigh out 8 ounces of coconut oil (or babassu oil if allergic). Melt the oil in a small saucepan, on low heat.

While the coconut oil melts, weigh out the olive, almond and castor oils and pour them into your slow cooker’s stoneware liner.

Add the melted coconut oil to the other oils.

 

Step 3 – Combining the lye solution and oils:

Still wearing gloves, goggles, and long sleeves, carefully pour the lye solution into the combined oils.

Stir the mixture using a stick or immersion blender. (THIS ONE is the kind I use.) For best results, alternate stirring for twenty to thirty seconds at a time with the power off, then the power on. If you run the stick blender continuously, you could burn out the motor, cause a false trace, and/or introduce a lot of air bubbles into your soap batter.

Stir until trace is reached. “Trace” means that the mixture has thickened enough so that when you drizzle some of the soap batter across itself, it leaves a visible trail or impression for a few seconds before sinking back in.

This soap is high in olive oil which means it might take a little extra time to reach trace, but it shouldn’t take longer than seven to ten minutes of stirring.

The photo below shows this recipe at trace:

Oatmeal & Honey Hot Process Soap at Trace

 

Step 4 – Cooking your soap:

Set the slow cooker liner, filled with soap batter that has reached trace, down into its base.

Turn the heat to low and cover your crock pot with the lid.

You’re going to cook your soap for one full hour, on low. I like to check mine every fifteen minutes and see how it’s doing. You may need to stir it down, but I usually don’t worry about stirring, until the hour has passed.

 

Here’s what this recipe looks like after 15 minutes:

Oatmeal & Honey Hot Process Soap after 15 minutes

 

After 30 minutes:

Oatmeal & Honey Hot Process Soap after 30 minutes

 

After 45 minutes:

Oatmeal & Honey Hot Process Soap after 45 minutes

 

And, after 60 minutes:

Oatmeal & Honey Hot Process Soap after 60 minutes

 

Step 4.5 – Make your honey & oatmeal mixture while the soap is cooking:

While the soap is cooking, combine the tamanu oil, honey, finely ground oats, water, and lavender essential oil (if using) in a small bowl.

Set this aside until needed.

 

Step 5 – Add the honey & oatmeal mixture to cooked soap:

Once 60 minutes of cook time has passed, it’s time to add that honey & oatmeal mixture you made while the soap was cooking.

Drizzle it over the top of the soap and then stir, stir, stir, stir!

You want to work fairly quickly with honey and make sure that it doesn’t get too hot. By adding it along with other items, it shouldn’t be a problem, but I have added straight honey to hot soap before and had it scorch and ruin a batch. You might want to dump the cooked soap into a new container before adding honey if you’re worried this might happen.

 

Filling Mold with Oatmeal & Honey Soap

Step 6 – Spoon the soap into a mold:

Since my family is hooked on round soaps, I use (and absolutely love!) THIS MOLD from Bramble Berry most often. Notice the rubber bands around it. I like to firmly rap my filled molds on the counter to make sure there are no air pockets in the finished soap. While this mold is sturdy and wonderful otherwise, it doesn’t react well to firm rappings unless you pinch the bottom edges firmly and keep rubber bands around it while doing so. (If you don’t, hot soap will leak out EVERYWHERE, including on your hands – ouch!)

You can also use a bread pan, lined with parchment or freezer paper, or even a small (lined) shoe box.

Let the soap sit in the mold for around 24 hours.

Cleanup of your crock pot is easy. Just set it into the sink and fill with warm water. Let it soak for a while and the soap residue will rinse right out.

 

Slices of Oatmeal & Honey Hot Process Soap

Step 7 – Slice into bars & enjoy!

Once firm, remove the soap from the mold and slice into bars.

You can use your soap right way, but it will last longer if you let it cure for a few weeks first.

This recipe makes 9 round bars for me, but if you use a loaf shaped mold, it will probably be more like 7 or 8.

 

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You may also like:

Soap Making 101 | How to Make Milk Soap | Honey & Dandelion Soap

Soap Making 101   How to Make Milk Soap From Scratch (Palm Free)   Dandelion and Raw Honey Soap Recipe

Links in this post to Bramble Berry and Amazon.com are affiliate links. That means if you click on one and make a purchase, I earn a small commission for sending a customer their way. This costs you nothing extra, but does help supply me with a small income and lets me keep doing what I do. Thank you! :)

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108 Responses to Hot Process Oatmeal Honey Soap (Crock Pot Method)

  1. Nadine says:

    Thank you for this recipe. I can’t wait to try it!

  2. Sherry says:

    Love your site! Follow on Facebook, and get e-mail updates:) I am on vacation (Yippy Skippy!) and wanted to try a hot process recipe. I have everything to make the soap except the meadowfarm oil. Can you give me a suitable substitution?

    Thanks!

    • Jan says:

      Hi Sherry, I usually replace meadowfoam with castor oil. Since it’s such a small percentage of the recipe, you can probably be pretty flexible with whatever you have on hand though. Have a happy vacation and have fun making your soap!! :)

  3. Debbie says:

    I don’t want to order any of the special oils; can I make this with just olive and coconut oils? Also, why worry about “gluten free” when oatmeal does not contain wheat gluten anyway and, at any rate, you will hopefully not be eating the soap? Do you know what gluten is? Most people don’t, and therefore the hysteria continues.

    • Jan says:

      Hi Debbie, You sure can make this with just olive and coconut. Use this recipe linked at the top of this post:
      https://thenerdyfarmwife.com/oatmeal-honey-soap-recipe-palm-free-gluten-free/
      but just make it in your crock pot instead, adding the oats & honey at the very end.
      Three of the four of us in my house have celiac disease, so we have unfortunately been well informed on gluten’s properties for almost 12 years now. Quaker Oats states on their web site that they aren’t gluten free due to cross contamination issues during harvest & transport, so we buy specially grown gluten free ones for baking at our house – but you are right that many people don’t need to worry about that aspect and hopefully no one will be eating their soap!

  4. Amber says:

    I haven’t yet started making soap because it is all confusing to try and figure out. This one has such simple instructions I’m going to try it for my first soap. One question, could jojoba oil be substituted for the meadowfoam oil?
    Thank you for making this easy to follow for a beginner like me!

  5. cheryl says:

    I made this soap a few days ago…it is lovely. My daughter in law and I poured into a prIngles can. It set up nicely and smells heavenly. Thank you for the recipe!

  6. Sirina says:

    Love the honey oatmeal soap recipe. Cant wait to try it. Love this site.

  7. anne says:

    Love your website. I have only made 10 batches of hot process soap, never tried cold process. I love using Pringle cans. Thanks for great recipes!

    • Jan says:

      Hi Anne, I’m glad to know you like the site! If you can make hot process, you’ll be a pro at cold process, since it’s one less step. (Though the waiting for cure time is sometimes hard!) :)

  8. ex army girl says:

    Dear Ms. Jan,

    Thanks for all that you do & I sincerely hope the holidays were good for your family.

    I have been reading up all over the place on making soap & I am ready–supplies finally in hand–to start my first batch. I really want to make hot process soap because of the “age” times involved with the cold process soaps.

    I was wondering how long it would take to hot process soap on the stove–I have a granite ware stock pot that boiled water sticks to, but think it will be just fine for soap making–rather than in a crockpot. It looks as though it was like 90 minutes tops for this recipe in a crockpot.

    I thank you & anyone else that may answer this question in advance.

    • Jan says:

      Hi Ex Army Girl,

      I’m sorry I missed your comment until now. Sometimes I get a bunch at once and a few sneak past my attention!

      I’ve not tried this recipe on the stove top, but it should be a similar process. Since the heat is just from the bottom, you’ll probably want to stir it frequently though, instead of skipping stirring like I did.

      You could also try HPOP (hot process oven process) The Soap Queen blog has a great tutorial!
      http://www.soapqueen.com/bath-and-body-tutorials/cold-process-soap/hot-process-series-oven-process-layers/

    • Jan says:

      Hi one more time!

      I just found this tutorial using the stove top that might help:
      http://www.zensoaps.com/hpsoap.htm

      So yes, looks like you should stir a lot when cooking your soap this way.

      • Vicky Bailey says:

        I have made old fashioned hot process kettle soap for many years. Kettle soap just means that a large amount of hot process soap is made at one time, generally over an open flame. I use a very large stainless steel canning pot. When you are heating your soap on a stove top, grill top, or open flame you do have to stir often. You will also need to watch your soap carefully if cooking on either a grill top, or open wood fire. I use a grill top, which I can tun up or down to control the temperature. This also means that I make my soap outside. I usually make about fifty or so bars at one time. It is a lot of work, nut to me it is well worth it. Best of luck, hope you enjoy soaping as much as I do.

        • Jan says:

          Hi Vicky, Thanks for sharing your wonderful information! I do some outdoor canning on a propane grill top and I love the idea of making soap that way too. I appreciate you letting us know how it does need stirring often. Thanks! :)

  9. Janean says:

    Hi Jan! I can’t wait to try this recipe! It looks pretty easy and fun. Can I omit or substitute tamanu oil or rosehip oil? I don’t have any and I want to make this tomorrow without having to wait on a mail order. (patience is not one of my virtues!) I do have Grapefruit seed extract or apricot kernel oil, if either of those can be used. Also, Pringles cans are lined with foil. Is that a problem with hot process soaps? Thanks!

    • Jan says:

      Hi Janean! Instead of the tamanu or rosehip oil, you can use any skin loving oil OR melted shea/mango/cocoa butter OR just omit it. Once the soap is cooked, the extra amounts are really flexible and you can get crazy creative with add-ins. Apricot kernel oil sounds like a perfect replacement though! That’s good to know about the Pringles can; we can’t eat them since we’re gluten free here, so I wasn’t really sure what they are like inside! Since cooking the soap puts the pH in a safe range, then the foil lining shouldn’t be a problem. I don’t think you’d want to use foil lined anything for cold process though.

  10. Aimee says:

    I just tried making this soap, and it was an epic fail :( I should also mention that it was my first time ever making soap, so I’m quite sure it was my error. It appears that the soap seized up in the crockpot, turning into a solid mass. It never bubbled up like your pictures. I tried adding the ingredients at the end, and of course they did not incorporate well and turned the soap a dark orange. I tried to smoosh the chunks into a mold, but I don’t think that is going to work out so well. Should I just chuck it and start again? I’m wondering if I overdid the mixing. I thought it reached trace well before the 7-10 minutes, so I kept going thinking surely it wasn’t finished yet. Now I’m thinking I should have stopped sooner? Would that cause the soap to seize up? I’d love to give it another go soon!

    • Jan says:

      Hi Aimee, I’m so sorry that happened! Trace really can be confusing to figure out – the first several batches of soap I made all failed on me because I just wasn’t sure what to look for either. It sounds like you reached trace early in and overmixed you soap. Soap will seize up and harden if that happens. Does your soap have a strong burnt or scorched smell to it? If so, then it might not be salvageable. But, if it still smells good, then you could try rebatching it. There’s a good tutorial on that over on the Soap Queen blog: http://www.soapqueen.com/bath-and-body-tutorials/tips-and-tricks/hot-process-hero-2/ I hope that works to save this batch and that you give soap making another try. Now that you know to stop stirring right at trace, then I’m positive your next soap batch will turn out wonderfully! :)

      • Aimee says:

        Thank you Jan! I’ll have to see about salvaging it. Might be a good experiment to try! I was so eager, so I went ahead and tried another batch. I was more careful about reaching trace, which actually took about as much time as it said in the instructions this time. I’m wondering if my lye was why my first batch solidified quickly. I mixed the lye outside and let it cool outside for 15 minutes, and it’s a cold day. Perhaps it got too cold? The second batch I only left outside for 8 minutes, and I think I will have usable soap! It still didn’t bubble up like your pictures (probably because I turned the crockpot on but didn’t have it plugged in for half an hour!) I’m going to try a 3rd batch tomorrow. I will remove the soap mixture from the crock before adding the honey/oatmeal mixture. It started getting orange again, but not as dark as the first batch. I did not realize that making soap is so much like a science experiment!

        • Jan says:

          Hi Aimee, I’m so glad that you tried again! It sounds like you’re quickly getting the hang of it too. I agree – soap making is a lot like a science experiment! It’s a lot of fun to try different variables and see what happens. :)

  11. Sarah says:

    Thanks so much for this idea!! I started out making hot-process soaps and absolutely love it!! I’ve been wanting to try a soap with honey, but have been scared for all of the things I read about scorching and my soap is already “hot”.

    Thank you for all you share!! You are so inspiring and helpful with all of your detailed information. And fun to read with all of your wit and humour!

  12. Kyle Anne says:

    I’ve made 2 different cold process soaps (I’m still waiting for both) and have tried the hot process for a basic (no scents added) recipe one time before trying this recipe today. I was a bit nervous about the hot process because I really wanted this one to work out and my one attempt at the hot process was difficult to work with when I was ready to mold it. It was dry and already seemed to be solidifying. Well, I was pleasantly surprised at how easy this was to mold. I used a Pringles can and because I was nervous about the consistency of the soap I cut the Pringles can in half thinking it would be easier to spoon the soap into it. I had to be a little careful with the end that had the lid as the bottom but it went very well. This combination of oils took a little longer to trace but was almost as easy to mold as the cold process recipes I used. As it was cooking it looked just like the pictures and I’m confident it will turn out. When I put the crockpot in the sink and started filling it with water the bubbles it made were so soft. I think this is going to make a fabulous soap and will probably use this oil combination as a base for all my soaps. Can’t wait to be able to un-mold it and see what it’s like. And of course use it! Thanks for the great tutorial!

    • Jan says:

      Hi Kyle Anne, I’m so happy that you liked the recipe! It has become one of my favorites as well. I wonder if perhaps your last hot process recipe might have benefited from more water? While I always do a pretty steep discount when making cold process (so my palm free versions will unmold quicker), I use the full amount for hot process. Also, when you want to add anything in at the end, don’t be afraid to add a few extra tablespoons of water if needed so everything mixes more easily. It may take an extra day or two to firm up in a few cases, but it’s well worth it! :)

  13. Nicole says:

    You said to add the eo’s at trace but this a hp recipe… Shouldn’t they be added after the cook?

    • Jan says:

      Oh goodness! Thanks for pointing that out! You are correct. EOs, honey, oatmeal & tamanu oil are all added after cook time. I’m so used to cold process format, I completely forgot to change it for this HP recipe. I appreciate your heads up!

  14. Zoe says:

    Great idea with the Pringles idea!!!!! What else can u use? Are family has no junk food containers. Bummer right? I have never tried hot process. I am super exited to try this!!! :) =>

    • Jan says:

      Hi Zoe! You could also use an empty milk carton or plastic storage containers or silicone pans or a glass bread loaf pan (lined with parchment to prevent sticking). Especially with hot process, you have a lot of options to play around with! :)

  15. Suchita says:

    Kyle Anne, is it easy to remove the soap from the Pringles can? How did you unmold? Could you please explain the process? Thanks.

    • Kyle Anne says:

      I apologize! I hadn’t seen your question. It is very easy to unmold from a pringles can. I simply cut into the top of the can and peeled it away. I guess if you line it you can re-use it but I just peel and toss!

  16. Emily Davis says:

    Thanks so much for the recipe! I do cold process all the time, but rarely do hot process (aside from rebatching from time to time). The recipe went exactly as described, and smells amazing. It’s in the mold now and I can’t wait to try it out!

    • Jan says:

      Hi Emily, I’m so glad that you like the recipe! Cold process is my favorite too, but every so often it’s fun to mix it up with some HP. :)

  17. Ru says:

    Hi Jan

    This recipe looks very interesting but I don’t have a crockpot and not keen to try the hot process method. Would this recipe work with the cold process method and I just add the oatmeal, honey and rosehip oil at trace? Or I should rather find a different recipe?

    • Jan says:

      Hi Ru! Yes, that’s exactly what you’d do – add those items at trace instead. Hot Process is almost the same as Cold Process – with HP just having an additional step of cooking, to speed things along.

  18. Carolyn says:

    Hi! I make cold process soap and was just wondering if you use your crock pot just for soap making only? Do you this same crock pot to cook food in? Thanks!

    • Jan says:

      Hi Carolyn! I was using an old crockpot for soap making, but in a fit of spring cleaning, threw the base out. (Oops!) So, I tried using my good crock pot instead. I thought it would be okay, but after two batches of soap, I could clearly see some etching and wear starting on the inner liner (and it was a fairly new crock pot.) I just didn’t feel comfortable re-using it for food, so I now use that formerly “good crock pot” for soap making only and need to buy a new one for our meals! I know some soap makers use the same equipment for soap making as for cooking though – so it may be a personal level of comfort thing.

  19. Katrina says:

    I have done a few hot process soaps before. I have used silicon loaf or muffin pans before with great results. I have also used a pvc pipe, 2 or 2 1/2 inches wide, lined with parchment paper. Just be sure to have an end wrapped tight with rubber bands to secure it really well, especially if you want to tap it down.

  20. Kathy says:

    I’m making my second batch of the Hot Process Oatmeal & Honey soap and just wanted you to know how much I’m enjoying it! You have such a fantastic sight (love your humor and pictures). Your definitely an inspiration! Just wanted to say thank you for sharing your creative ideas and stories. =)

  21. Beverly Reinbrecht says:

    To make round soaps I use clean Pringle Potato Chip cans. I enjoy the chips and then I enjoy the can.

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  23. denise neel says:

    Hi Jan, I found your web page and I love it with all the information. I was a specialty seamstress for over thirty years and until my eye sight got to bad so I retired from that, got bored and got interested in soap making. I have been soaping CP & HP for a year now and business is picking up. I have been selling by word of mouth and giving samples away for people to try. I have had some laughable moments when I started adventuring into the CP. Tomorrow I’m taking my little granddaughter to pick some Dandelions and Roses and let her help with the teas and the infusions, thought that would be a great experience for her. I wanted to ask your opinion on Grape seed oil, I understand it has a lot of benefits. Your soaps are super looking soaps and you display them nicely, simple and sweet. I’m like that too simple. lol

    • Jan says:

      Hi Denise, Thanks for the kind words and sharing your story! That’s wonderful that you’re letting your little granddaughter do things with you as well! She is really going to treasure those memories. Grape seed oil does have lots of benefits – it’s light and absorbs easily into the skin. It’s also a good choice for those with acne. The only real drawback that I know of, is its short shelf life (6 months or so I believe). I don’t use it as much as I’d like to, but that’s only because it’s not as available to me as olive, coconut, sunflower and castor oils. I need to order some more oils soon, I’ll have to get some and try it out in a few recipes!

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  25. Melissa says:

    Hi
    Can your cold processed recipes be made as hot processed? Would the measurements be the same? Thanks! Melissa

    • Jan says:

      Hi Melissa, Yes, they sure can! Hot process is just cold process soap with one extra step of cooking it so you can use it sooner. The only difference is the stuff you add at trace in cold process recipes, should be added after hot process cook time instead.

  26. Karen says:

    When curing, should I cover the bars or just stand them upright?

  27. Connie says:

    Hi Jan! I just wanted to say thank you for your thorough tutorial on the hp method. I made my first batch last week and it is heavenly! I did not use all the oils you mentioned but what I had on hand being canola, coconut, jojoba, castor and grapeseed and ran it through a lye calculator before beginning. I also used a pear FO that I had on hand since the lavender didn’t seem to go with this particular recipe. I just love the way it turned out. Thanks again for your wonderful site!

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  29. Karen says:

    Should the molds be covered?

    • Jan says:

      Hi Karen! I don’t cover the molds for hot process soap unless I just use a single sheet of wax paper to protect the top. (Depends on how busy the kitchen is that day and if I’m afraid someone will knock something into it.)

      • Karen says:

        thank you! Also I have made two batches now and the soap is not getting hard-is that normal? I mean it’s firm but it if you squeeze it it feels soft.

        • Jan says:

          Hi Karen! It probably needs a little more cure time in the open air to dry out a bit. I tend go on the high side with water when I make hot process soap, so it’s smoother and easier to mix, but you could decrease it by an ounce or so if you’d like and see if that helps it to get solid faster.

  30. Karen says:

    Maybe it’s my coconut oil. I didn’t want to use my organic stuff so I used the cheap stuff from the grocery store.

    • Hi Karen! I’m so sorry that I missed this comment! Sometimes a bunch come in at once and I don’t get to see them all. How did your soap ever turn out? I had to stop using grocery store oils too. I love their convenience, but they were getting unpredictable for me!

  31. Gayle says:

    Is it necessary to have a crock pot designated only for the soap making–or is it safe to use one that will be used again for cooking?

    • Jan says:

      Hi Gayle! I’ve seen people on both sides of the fence on this issue. I like to use a separate one since after just a few uses, you can see wear in the bottom from the stick blender. Some soapers though use the same equipment, washed and rinsed very thoroughly. I think it’s probably a matter of personal comfort level.

  32. Adriana T. says:

    Hi!.. this looks great for me to use for myself since I have eczema! I’m new to soap making and am trying to learn how to make my own recipes for hot process. Can you please help explain what formula you use to calculate how much and what types of superfats to add. I’m having trouble because the lye calculators I’ve found seem to apply more to cold processing where you can just discount the lye based on total weight. I want to make sure all the lye is used by my base oils.

    • Jan says:

      Hi Adriana! I use the same recipe/formula for cold process and hot process soap. (Hot process is basically cold process + the extra step of cooking to speed it up.)
      I use this calculator:
      https://www.thesage.com/calcs/LyeCalc.html but Bramble Berry has a good one too:
      http://www.brambleberry.com/pages/Lye-Calculator.aspx
      SoapCalc is good, but it was very complex for me when I was first learning, so I like the two above for being easier to understand.
      The one main difference between cold process and hot process is, like you said – the superfat stage.
      For cold process, if you add extra oil at trace, it all gets saponified, so should be included in your recipe to make sure you have the lye balance correct.
      For hot process though, if you add oils after cook time, they won’t be used by the lye, so are more like bonus oils. Don’t calculate them in the recipe, but do know they’ll make your bar more moisturizing, so you might want to superfat your HP soap at 5% (rather than the 6% you might use for CP) if you’re adding extra oils after cook time.
      I usually aim for adding somewhere around 1/2 ounce extra oils and I usually choose the more beneficial, but more expensive oils for that stage – such as jojoba, argan, shea, rosehip, tamanu…
      I hope that helped explain your question, but if not, let me know!

  33. Dar says:

    Is there a replacement oil for meadowfoam in this recipe? Thanks!

    • Hi Dar! If you don’t have meadowfoam oil on hand, you can replace it with castor oil. (Both of these oils help boost lather a little bit.) If neither one is available, you can just use more sweet almond oil instead. If you can’t use sweet almond oil, try avocado, sunflower, or even more olive oil instead. It’s such a small amount, it shouldn’t really change the lye amount needed.

  34. lisa says:

    Can you double the recipe, or should I make it in batches.

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  36. angel says:

    hi, at what temp do i add the lye mixture to the oil mixture? how low should the heat be while i’m cooking them together? thank you so much i love your website and I’m excited to try soapmaking (once i’m done with all my researching and reading)

    • Hi Angel! You want to keep the crockpot set to low while you’re cooking the two mixtures together. For hot process soap, the temperature that you add the lye mixture to the oil mixture isn’t too critical to measure, since you’re cooking it right away. I usually just set the lye solution aside for around 10 to 15 minutes while I get everything else ready and it’s good to go by then. I’m not sure I’ve checked the temperature for that method before, but I’ll try to remember to next time, to add that information to the recipe. Good luck with your soap making adventures! :)

  37. m carr says:

    I just saw this and have very sensitive skin and wanted to know if soap would work without the lye.

    • Hi M! All soap has to have lye in it, because that’s what turns oil into soap. Our great-grandmothers used wood ashes to make their own version of lye (but it was an unreliable strength), while today we have one standardized product that turns out nice and gentle soaps every single time. When made properly, no lye is left by the time the process is finished. Each molecule of lye matches up to molecules of oil and they form a brand new substance – soap, plus a little leftover glycerine which is great for your skin. You can think of it in a way like salt is made from sodium (a metal) and chlorine (a toxic gas). Once the chemical reaction is complete, it’s no longer a metal or a toxic gas, but a brand new substance – salt, that’s a tasty addition to our meals and dishes. Even store bought soap has lye (on the label as sodium tallowate, sodium palmitate, sodium cocoate, saponified oils, etc) OR it has synthetic detergents to mimic the soaping action, and those can definitely be irritating (and drying) to sensitive skin. My own family has sensitive skin, so I can completely relate to your concern, but I assure you that homemade soap made with lye has been much better for us! :)

  38. Kristy says:

    Hello! Thank you for sharing this recipe, it sounds lovely! I have a question though – does this soap turn out soft? I’ve never made a soap that didn’t include any hard oils (I usually use shea and cocoa butters). Would you advise any substitutions to make it a harder bar if needed?

    • Hi Kristy! It shouldn’t turn out overly soft, but I do tend to like a lot of high olive oil recipes that need a longer cure time to really firm up. It has a good amount of coconut oil to add hardness, but you’re exactly right, that shea or cocoa butter will certainly help firm it further! I would try taking away 3 or 4 oz of the olive oil and replacing it with cocoa butter, or shea butter. If you need help running that change through a lye calculator, just let me know! :)

  39. Jen C says:

    I see a note that says not to use aluminum with this recipe because it the lye will react. When using the Pringles can do you line it with something? I think the can itself is aluminum lined. Have you had any reactions using this method.

    Thank you!

    • Hi Jen C! You don’t want to put raw soap batter or straight lye solution against aluminum. Once it has been cooked in your crockpot, it should no longer be reactive and should be fine in a Pringles can. We don’t eat them to have a can handy (they have gluten & 3/4 of my family has celiac), so I haven’t tried it personally. I have heard from plenty of people that use the idea successfully though! Just don’t try it with uncooked cold process soap and I think it should be fine.

  40. Sarah says:

    Hi Jan,
    Thanks for this recipe! I have just made my first batch of hot process soap! I like the idea that you can get away with using less essential oils with hot process. My batch was pretty ugly in the mould – will see tomorrow how it comes out.
    I thought I could perhaps use the fact that the hot process soap has finished reacting by the time additives were added to add milk powder to make milk soap – what do you think? I will experiment – I made some “Vanilla Cafe Latte” soap for my son a while back using milk powder as an additive, rather than using liquid milk with the lye, to cold process and then putting in the freezer, but I think it may work better with hot process. Only one way to see, I guess!!
    Thanks again for all your recipes,
    Sarah

    • Hi Sarah, Hooray for making your first hot process batch! I agree that they aren’t as pretty, but they’re fun to play with sometimes! Milk powder makes a great additive. I like to add that two different ways. 1.) blend it in with my oils. You can make any recipe like normal and then for about a 2.5 lb batch, try adding 1 tablespoon (abt 6 g) milk powder to your oils. Stick blend it really well, then pour in your cooled lye solution and make the soap like normal. OR 2.) reserve about 1 oz of the water from a recipe and make the soap like normal otherwise. At trace, mix the milk powder and water together really well, then blend it into your soap batter before pouring into the mold. (Haven’t tried this hot process though.) Milk powders are nice – there’s no freezing to fool with and a lot less fuss than other milk soaps techniques! :)

  41. Leah says:

    Is it possible to over stir during the “stir to trace” stage? I stepped away for a minute and my husband was doing the stirring, and when I came back it looks like applesauce. Now it is just so thick and not bubbling up on the sides of the crockpot or anything as it usually does? Does this sound like an over stirring problem? And, is there a way to salvage the soap or what do I do next?

    • Hi Leah! That does sound like you might have stirred a little bit too much. That happens to me sometimes too, and I end up with a really thick trace. When that happens and it gets really thick during cooking, I just get some warm water in a small cup and trickle it in, a bit at a time. Then stir, stir, stir the water in. If it’s a really solid clump, you can try stick blending right over it, with water added. Keep pulsing the stick blender right at the surface and it will break the clump up. I noticed this happened more often with my crockpot that runs a bit too hot, so when I use that one and accidentally get too thick of a trace, I just add a bit more water before I even start cooking it.

  42. leah says:

    Is it possible to rebatch hot process soap and if so, what is the process? Mine has hard, white clumps in it…from overheating?

    • Hi Leah! I haven’t tried rebatching hot process, but I bet it would work in a similar way. This is the method I use to rebatch:
      http://www.soapqueen.com/bath-and-body-tutorials/tips-and-tricks/hot-process-hero-2/
      Even though it says to do it within 24 hours, I’ve waited longer before and still had it turn out okay.
      Are the hard white clumps soap or do you think they’re pockets of lye?
      If you think they’re just soap, it could be where the thicker trace cooked them more solidly first. I’ve had that happen and the soap is still completely usable in that state.
      If you think that they’re pockets of lye though, definitely try the rebatch method.
      Let me know how it turns out!

  43. Jenny says:

    Do you use any essential oils to scent this soap? If not, is it a pleasant scent without?

  44. Chris says:

    Hi! I love this recipe; it makes such a lovely soap! That being said, today I completely spaced out and added in my oats, cocoa butter, honey, and water BEFORE cooking it. I was so afraid it would scorch! But…I turned the crock pot on its warm setting and stirred every 5-10 minutes, and while it was a darker caramel color than my other batches, it still smelled really good and seems to have pulled through without any issues! Is there anything I should look out for? Ph tests were fine and it was without lye pockets.

  45. Pingback: How to Make Goat’s Milk Soap From Grocery Store Items – The Nerdy Farm Wife

  46. Linda says:

    Hi! I made this a couple days ago and love it! I actually would like to try your cold process oatmeal and honey recipe next but am wondering why the larger cold process oatmeal recipe has the same and less amounts of oatmeal and honey as this smaller recipe has. Should I increase the oats, honey and butter at trace in the larger recipe and by how much?

    • Hi Linda! The larger cold process soap is one of my older recipes. Over the years, my soapmaking has changed as I learn new tricks or try new things out (and as I also run into new failures!) :)
      You should be able to safely double the amount of oats & honey in the cold process recipe (and adjust even higher or lower if you want to experiment – just don’t do TOO much more honey or it will overheat & could make your soap too soft).
      I would keep the butter amount the same though, so the soap doesn’t end up too superfatted. (Too many extra free-floating oils/butters will lead to a soap that’s too soft or go rancid more quickly.)

  47. Valerie says:

    I have question – I’m making a batch of this HP soap right now and the instructions state to cook in crock pot for 1 hour. Well it’s been almost 2 hours, and when I check for lye, the lye is still really strong. (I use the liquid drops to test for lye). Should I continue to cook even though it’s in a gel stage?

    • Hi Valerie! I would go ahead and put the soap in your prepared mold and let it sit for 24 hours then check again. If it’s still testing lye-heavy after a day or two, then it sounds like the soap itself is lye heavy. Is it possible that you missed putting an oil in? Sometimes too, when scale batteries are about to go, they won’t measure things out correctly. Hopefully though, maybe your soap just needed a little more time and I hope that it’s doing well for you now! :)

  48. Jenny Ficks says:

    Aren’t you supposed to add the EO after the mixture has cooled down? My last 2 HP, the EO hardly stayed and I’ve been reading about flash points. For Lavender, I think it should be ok at 160ish.

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