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Coco Betaine VS Sodium Cocoamphoacetate VS Decyl Polyglucoside? Water based cleanser.
I’ve played around will all of these “natural” surfactants, but can’t really tell too much of a difference, currently I’m using a combination of SC and a smaller amount of DP for my water based cleanser (SC is cheaper). They seem to lather similarly.
Any knowledge on which ones are the gentlest to the skin? My skin is not particularly sensitive, so it’s hard to know. And other reasons to choose one over the other, other than price?
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6 Replies
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Looking at the chemistry of the 2 surfactants I suppose glucoside would be gentler on the skin. But again we have to remember that C-chain length too plays a role in determining the irritation potential.
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A combo of surfactants is usually used for mildness. Most APGs have high pHs so they’ll need to be brought down.
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Thanks guys, guess it’s not easy to know. The formula is adjusted to pH 4 with glycolic or citric acid btw. Not sure if they are equivalent in effect or irritation potential.
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They both are weak acids though glycolic acid is monoprotic and citric is triprotic and if used just for buffering (and not as keratolytic) I suppose they are pretty safe.
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According to the supplier, modifying the APG further results in a natural ingredient that is milder than APG:
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Guess the keratolytic effect could be beneficial in a cleanser designed for acne prone skin
Lactic acid would be another option, but the smell…
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