Hi Stephanie! I’ve used neem oil from Bramble Berry, Mountain Rose Herbs, and Wholesale Supplies Plus and they’ve all been great.
By cosmetic grade, I mean from a place that sells oils that are intended for use on your skin, instead of a neem oil mixture from your local garden center that’s intended for using on garden bugs.
There’s a chance that the garden variety might have additives or components that aren’t necessarily healthy to apply to your skin. :)

I see you mentioned cosmetic grade neem vs one purchased in store. Store version more harsh?
where are you purchasing your cosmetic grade neem, brambleberry etc?
thank you
Stephanie