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shampoo viscosity
I am currently working on a sulfate-free shampoo formula at pH = 4.9. However, the challenge is that viscosity decreases when I lower the pH.
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12 Replies
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It will be hard to advise you without knowing the formula or list of ingredients at the least. Have you tried adding a polymer like hydroxypropyl methylcellulose?
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The formulas is
Disodium Laureth Sulfosuccinate 10%
COCMIDOPROPYL BETAIN 8%
Coco-Glucoside 7%
Cocamidopropylamine Oxide 5%
PEG-7 Glyceryl Cocoate 2%
fragrance 1%
Hydroxypropyl Guar (and) Hydroxypropyl Guar Hydroxypropyltrimonium Chloride 1%
polyqautrnium 10 0.4%
phenoxyethanol 1%
POLYQUATERNIUM-7 1%
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Yes if you want any helpful answers you’ll need to list your ingredients
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<div>Try using a Carbomer in your formula - please see:</div>
cosmetics.specialchem.com
Carbomer (Thickening Agent) - Cosmetic Ingredient INCI
Find more about Carbomer (CAS No. 9007-20-9) cosmetic ingredient used to control the viscosity and flow of cosmetic products. Check related commercial grades and formulations.
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The formulas is
Disodium Laureth Sulfosuccinate 10%
COCMIDOPROPYL BETAIN 8%
Coco-Glucoside 7%
Cocamidopropylamine Oxide 5%
PEG-7 Glyceryl Cocoate 2%
fragrance 1%
<b style=”font-family: inherit; font-size: inherit; color: var(-bb-body-text-color);”>Hydroxypropyl Guar (and) Hydroxypropyl Guar Hydroxypropyltrimonium Chloride 1%
polyqautrnium 10 0.4%
phenoxyethanol 1%
<b style=”font-family: inherit; font-size: inherit; color: var(-bb-body-text-color);”>POLYQUATERNIUM-7 1%
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The formulas is
Disodium Laureth Sulfosuccinate 10%
COCMIDOPROPYL BETAIN 8%
Coco-Glucoside 7%
Cocamidopropylamine Oxide 5%
PEG-7 Glyceryl Cocoate 2%
fragrance 1%
Hydroxypropyl Guar (and) Hydroxypropyl Guar Hydroxypropyltrimonium Chloride 1%
polyqautrnium 10 0.4%
phenoxyethanol 1%
POLYQUATERNIUM-7 1%
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Do you need to go that low in pH? Most shampoos have a pH between 5.5-6.0. CAPB has a better interaction with anionic surfactants at higher pH, so maybe that’s what’s causing your pH drop.
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It’s a shampoo for damaged hair, so I think this pH is the best choice
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Upon dilution, the final pH will eventually be same as water. Even at low dilution (like 1:1 water/shampoo) you’ll already have a pH above 5, and that increases very rapidly. Before adding any water, there’s little difusion of your actives to hair surface due to high viscosity of shampoos. What you need is to have a system that produces high coacervation, and enough detergency to remove most of it later.
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your proposals to fix the formulas ?
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Hi, I recently made a shampoo and the ingredients started separating which caused it to be runny, so I bought xanthan gum to thicken it, it has been more than 12 hours and the shampoo did thicken but is thin. I put 15ml in 5l shampoo, so I just wanted to how long it will take for the shampoo to thicken
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My proposal is to either have a not so low pH so that CAPB can properly interact with your anionic surfactant, or to add a rheology modifier that works at low pH.
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