Database/Light Stabilizer/Polysilicone-15
100% petroleum · ISO 16128

Is Polysilicone-15 natural?

No. Polydimethylsiloxane-based UV filter; classified petrochemical under the site's blanket silicone convention despite its mineral-derived Si-O backbone.

INCI namePolysilicone-15
CAS207574-74-1
FunctionLight Stabilizer · Uv Absorber
FeedstockPolysilicone-15 (Parsol SLX) is a synthetic siloxane polymer…

How we scored it

Siloxane polymer backbone with grafted benzotriazole UV-absorbing groups; this site's convention scores all silicones 0.0 regardless of the mineral-derived Si-O backbone.
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

Polysilicone-15 (Parsol SLX) is a synthetic siloxane polymer grafted with a benzotriazole UV-absorbing chromophore, manufactured entirely in the lab. No natural or extraction route exists.

In plain English

A silicone-based sunscreen ingredient that filters UV rays and gives a silky skin feel. It's fully synthetic, made in a factory rather than derived from plants.

CosIng definition: Polysilicone-15 is the siloxane polymer that conforms generally to the formula:

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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-15. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3POLYSILICONE-15. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=POLYSILICONE-15