What causes lotions to expand out of the bottle?
Hi ☺️I’m not much of a cosmetic scientist, but there’s something I’ve experienced recently when trying to replicate a hair makeup formula for my personal use - I find that some of my samples are stable for 24 hours then start to expand once they’re sealed (to the extent that it warps the jar and makes a popping sound when it’s opened) Any ideas why this might be happening?
just a simple emulsion with water, glycerin (2%) , btms-50 (3.5%), oils(2%) Cetyl alcohol (2%) , mica, silk protein, panthenol and preservatives (germall plus)
I make sure I properly sanitize all of my equipment before using and I use an overhead stirrer without the “dissolve type” stirring head
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