A member from my course explained that Optiphen isn't enough on it's own to combat microbes completey. Not sure how true this is. And I'm new to this forum, but not to soap making. I was directed to ask for this advice here :mrgreen:
Im in the UK so not allowed to use Germall plus. Are there any alternative preservatives that are similar? I bought a load of regular Optiphen only to find out that it's pretty much useless.
Formula using:
70% Water
15% Oil
5% Shea or mango butter
5% Emulsifying wax
3%...