How we scored it
Where it comes from
Corn or potato starch is etherified with glycidyltrimethylammonium chloride (from epichlorohydrin and trimethylamine). Degree of substitution assumed ~0.3; commercial grades vary.
In plain English
A conditioning and thickening ingredient made from plant starch reacted with a lab-made cationic compound, used in hair and skin products. The starch backbone is plant-derived; the added cationic group is synthetic.
CosIng definition: Starch, 2-hydroxy-3-(trimethylammonio)propyl ether, chloride
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References
- 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.
- 2STARCH HYDROXYPROPYLTRIMONIUM CHLORIDE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3STARCH HYDROXYPROPYLTRIMONIUM CHLORIDE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=STARCH%20HYDROXYPROPYLTRIMONIUM%20CHLORIDE