Database/Antistatic/Cocodimonium Hydroxypropyl Hydrolyzed Silk
Mostly natural · ISO 16128

Is Cocodimonium Hydroxypropyl Hydrolyzed Silk natural?

Mostly. The silk peptide backbone and the coconut-derived alkyl chain are natural. Only the dimethyl groups and the hydroxypropyl linker, which come from methylation and epichlorohydrin, are petrochemical.

INCI nameCocodimonium Hydroxypropyl Hydrolyzed Silk
FunctionAntistatic · Hair Conditioning
FeedstockSilk fibroin is hydrolysed, then reacted with a…

How we scored it

Assuming an 1100 Da silk peptide with one quaternary site: natural origin is the peptide (1100 Da) plus the coco fatty chain (180 Da) = 1280 Da, against a petrochemical dimethyl and hydroxypropyl linker (90 Da). Total 1370 Da, so 1280/1370 = 0.93.
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

Silk fibroin is hydrolysed, then reacted with a coconut-alkyl dimethyl quaternary ammonium reagent built partly from epichlorohydrin. The degree of substitution is not published and was assumed low.

In plain English

A hair-conditioning ingredient combining hydrolysed silk protein with a coconut-oil-derived fatty group and a lab-made positively charged linker, which together help it bind to hair and add softness.

CosIng definition: 2-Hydroxy-1-propanaminium, N,N-dimethyl-N-(coco-alkyl)-, 3-hydrolyzed silk, chlorides

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