Database/Emulsifying Surfactant/PEG/PPG-20/15 Dimethicone
100% petroleum · ISO 16128

Is PEG/PPG-20/15 Dimethicone natural?

No. Silicone backbone is zero by this site's convention; ethylene oxide and propylene oxide side chains are petrochemical; nothing natural remains.

INCI namePEG/PPG-20/15 Dimethicone
FunctionEmulsifying Surfactant
FeedstockMade by ethoxylating and propoxylating a hydroxypropyl-terminated dimethicone…

How we scored it

Dimethicone backbone (silicone, 0 by this site's convention) + 20 mol ethylene oxide (0) + 15 mol propylene oxide (0). No natural fragment remains: 0.00.
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

Made by ethoxylating and propoxylating a hydroxypropyl-terminated dimethicone with petrochemical ethylene oxide and propylene oxide. No natural-origin manufacturing route is used commercially.

In plain English

A silicone-based emulsifier used in skin and hair products to help water and oil blend smoothly. It is made entirely from synthetic silicone and petrochemical building blocks.

CosIng definition: Siloxanes and silicones, dimethyl, 3-hydroxypropyl methyl, ethoxylated, propoxylated (20 mol EO, 15 mol PO average molar ratio)

Natural alternatives with the same function

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/PPG-20/15 DIMETHICONE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3PEG/PPG-20/15 DIMETHICONE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=PEG/PPG-20/15%20DIMETHICONE