Database/Antifoaming/Polysilicone-8
100% petroleum · ISO 16128

Is Polysilicone-8 natural?

No. Silicone-acrylate graft copolymer joined through a thioester; both backbone types are non-natural by rule and convention.

INCI namePolysilicone-8
FunctionAntifoaming · Hair Conditioning
FeedstockA silicone-acrylic hybrid made by linking a thiopropyl-functionalised…

How we scored it

Thiopropyl-methylsiloxane/dimethylsiloxane copolymer, S-ester linked to a polyacrylate; silicone and acrylate fragments both score 0.
What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.

Where it comes from

A silicone-acrylic hybrid made by linking a thiopropyl-functionalised dimethylsiloxane to an acrylic acid/methyl methacrylate copolymer via a thioester bond. Entirely synthetic in origin.

In plain English

A silicone-acrylic copolymer used in haircare for anti-foam and conditioning effects. Entirely synthetic, with no natural-origin content.

CosIng definition: 3-Thiopropyl methyl siloxane, polymer with dimethylsiloxane, S-ester with polymer of 2-propenoic acid and methyl 2-methyl-2-propenoate

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References

  1. 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
  2. 2POLYSILICONE-8. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3POLYSILICONE-8. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=POLYSILICONE-8