Database/Hair Conditioning/PEG-3 Dimethicone
100% petroleum · ISO 16128

Is PEG-3 Dimethicone natural?

No. The silicone backbone is zero by this site's convention and the short PEG end-block is petrochemical.

INCI namePEG-3 Dimethicone
FunctionHair Conditioning · Skin Conditioning
FeedstockPEG-3 Dimethicone is a silicone polymer end-capped with…

How we scored it

Dimethicone (0, convention) end-blocked with 3 mol ethylene oxide (0, petrochemical); both fragments zero.
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

PEG-3 Dimethicone is a silicone polymer end-capped with a short petrochemical ethylene oxide chain. No natural-origin route is used commercially.

In plain English

A lightweight silicone conditioning ingredient for hair and skin. It is manufactured entirely from silicone and petroleum-derived chemicals.

CosIng definition: Silicones and siloxanes, dimethyl, hydropoly(oxy-1,2-ethanediyl methyl, trimethylsilyl terminated (3 mol EO average molar ratio)

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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. 2PEG-3 DIMETHICONE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3PEG-3 DIMETHICONE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=PEG-3%20DIMETHICONE