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How much does adding nonionic surf impact shampoo mildness? / PH drift
I’m experimenting w/ the current liquid shampoo formulation for dry hair and am noticing that the next day, my foam diminishes significantly.
From all i’ve researched on this board, I suspect it’s due to a drift in PH. I won’t be able to accurately test my PH for a couple days (waiting to get distilled water during weekend) but:
#1 How likely is PH drift being caused by decyl glucoside? This is my main suspect
#2 if I remove decyl glucoside, theoretically how much will this impact mildness of the total formulation? Yes, I can test it out but I took waaaayy too many showers recently and my face/hair are dried out + benzyl alcohol hurts my face. I need a break from being my own guinea pig..F
rom all i’ve researched, nonionic surfs encourage micelles to change into rod-shapes which means more mild on skin/less aggressive penetration vs. the small micelle spheres of anionic surfs.Liquid shampoo:
SCI 5% (ASM 95)
Coco Betaine 4%. (ASM 50)
Decyl Glucoside 2%. (ASM. 50ish)
Cationic Guar Gum 0.7%
Guar Gum 0.3%
Xanthan Gum. 0.3%
Benzyl Alcohol + DHA 0.7%
Essential Oil few dropsTIA - this board is da bomb
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4 Replies
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Decyl Glucoside is mild but it makes the Skin dry.
Reduce cationic guar to <%0.3Increase your preservative to %1.
You need more anionic surfactant.
Is your sci completely solubilized in water?
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It would appear that you simply don’t have enough total surfactant in your concoction to develop a nice foam. Try doubling up on each of the surfactants you are using.
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Alternatively you can add a foam/lather booster ie 1-2% active amine oxide
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might I suggest a human hair mannequin head for testing the shampoo? I do this all the time until I get to a point where I like it and am ready to use on humans.
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