-
what’s wrong with this formula?
hello all..
I tried to make a deodorant balm and the formula was:
sodium bicarbonate 20%
coconut oil 20%
shea butter 15%
Bee wax 15%
propylene glycol 10%
glycerin 5%
citric acid 5% (to reduce alkalinity and skin irritation)
corn starch 5%
lavender oil 3%
camomile oil 2%but it underwent fermintation like a dough (if it’s a suitable expression)
I thought the reaction between sodium bicarbonate and citric acid requires water.. am I wrong?so..what do you think?
kind regards..
-
1 Reply
-
Is that a DIY formula you read on a nonscientific blog?
It’s full of chemical mistakes:
1 Glycerin is water soluble, not oil soluble AFAIK (I might be wrong, so please check it out yourself)
2 Sodium bicarbonate is definitely not oil soluble. Besides it likely rises pH = irritating to skin.
3 While propylene glycol is a bit oil soluble, and not irritating,
Why these “green” bloggers chose a synthetic chemical along vegetable oil.4 The formula is extremely oily.
(I admit I’m biased against anything oily, greasy or sticky)
It’ll take forever to dry and likely stain shirts in the process.
I don’t think propylene glycol will speed up drying much.5 You can’t react bicarbonate with citric or any acid = you’ll no longer have bicarbonate, it reacts to sodium citrate + CO2 + water I believe
CO2 will create bubbles and water will separate from oil, or at least become hazy.Water-based bicarbonate deodorant formulas look intereting. Like this one
Log in to reply.