Database/Emollient/Bis-PEG-18 Methyl Ether Dimethyl Silane
100% petroleum · ISO 16128

Is Bis-PEG-18 Methyl Ether Dimethyl Silane natural?

No. PEG chains are petrochemical ethylene oxide and dominate the mass; the small silane core is scored 0.0 under the site's silicone convention.

INCI nameBis-PEG-18 Methyl Ether Dimethyl Silane
FunctionEmollient · Foam Boosting Surfactant
FeedstockMade by end-capping a dimethylsilane core with two…

How we scored it

Dimethylsilane core end-blocked with two 18-mole PEG-methyl-ether arms (36 EO total); silane core and PEG both petrochemical/silicone-convention 0.0.
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

Made by end-capping a dimethylsilane core with two methyl-ether-terminated polyethylene glycol chains averaging 36 moles of ethylene oxide total. Both the PEG chains and the silicone-family core are petrochemical by feedstock and by this site's convention.

In plain English

A silicone-related conditioning ingredient built mostly from synthetic PEG chains attached to a small silicon core. Used in small amounts to condition hair and boost foam.

CosIng definition: Bis-Peg-18 Methyl Ether Dimethyl Silane is a dimethyl silane ethoxylated methyl diether containing an average of 36 moles of ethylene oxide

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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. 2BIS-PEG-18 METHYL ETHER DIMETHYL SILANE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3BIS-PEG-18 METHYL ETHER DIMETHYL SILANE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=BIS-PEG-18%20METHYL%20ETHER%20DIMETHYL%20SILANE