Foaming towards the end of curing

[Izzye]

(I feel like I'm spamming, sorry about that, but I didn't think I could tack it onto the end of my other post being so unrelated)

I've got a coconut and olive oil soap that I can't find the recipe for right now but it had no fragrance oil and went to a very thick trace, hence the strangely shaped bars. It's due to finish curing on the 24th, but it's developed this strange foaming on the surface, wipes off quite easily and the soap is hard underneath. Do I need to worry?

 

[Nao]

As long as it doesn't zap it's probably safe to use.

 

[The Efficacious Gentleman]

Looks like soda ash to me - is it powdery-ish when you rub it away? Basically, some of the lye reacts with the air to make sodium carbonate (soda ash).

edit to add - it's a cosmetic issue only, not dangerous at all

 

[IrishLass]

Looks like harmless soda ash to me, too. It's a pretty common thing and nothing to be worried/concerned about.


IrishLass