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Do high molecular weight dimethicones work better in shampoos?
I tried 350 Cst dimethicone and got just fair results.
Do high molecular weight dimethicones work better?Many sample recipes say so:Selecting the perfect silicone for your formulation
… High-viscosity dimethicones (60,000 to 100,000 cst) are commonly used in hair care products…
https://www.brb-international.com/uploads/files/Silicones/News%20item/Article%20Personal%20Care%20Magazine%202014%20July.pdf2-IN-1 SHAMPOO
Dimethicone 60000 cS 0.80%
(albeit they also use 1.2% dimethicone 350 cst)
https://www.personalcaremagazine.com/formulation-details/419/2-in-1-shampoo?companyid=1287CONDITIONING SHAMPOO WITH DIMETHICONE
Dow Corning 200 Fluid, 12,500 cps (Dow Corning) Dimethicone
https://www.stepan.com/uploadedFiles/Literature_and_Downloads/Formulations/Shampoos_and_Conditioning_Shampoos/StepanFormulation732.pdf -
6 Replies
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OK what would Polytrap 6500 be like in a shampoo I wonder? (Dimethicone petrolatum)
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They work, and they also kill the foam. I wouldn’t put much faith on it for shampoos.
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Thanks.
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@Belassi Polytrap 6500-Dimethicone petrolatum-I am not familiar with this material. Could you use this in a intimate skin application? I have a customer that wants a petrolatum style thick product.
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@Chemist5000 : I would say so. We’ve been selling a hand cream using this for about 4 years now, it is very nice. Gives a silky effect. It comes as a white powder, incorporate in the oil phase. My original design was too thick, in fact.
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This study says that 10,000 to 280,000 polydimethylsiloxanes (cyclomethicones) work better.
I wonder how that molecular weight “translate” to dimethicone viscosity.
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.542.6263&rep=rep1&type=pdf
The study also says that:
- Silicone deposition is dependant on concentration.
- Cetrimonium aids deposition
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