Hi Lucia, That’s such a great question! If your soap is leaking color, then it’s a good idea to try reducing the amount of colorant. Try cutting it in half and see how that does, then adjust from there.
Something I also do with melt and pour is dab a bar dry with a clean, dry washcloth after a shower/bath and then store the soap on a dry soap dish between uses. It’s a little extra step that I don’t always remember to do! But it does help the soap last longer too.

I bought your book and I love it. Keeps me inspired to make my own soaps. One issue that I haven’t seen addressed yet is the leaking of the color from the natural colorants. So far I used turmeric and purple kaolin clay and in both cases I noticed that the color leaks and stains the sink/counter/bathtub. Is there any solution to that?

Thank you!