Database/Antistatic/Hydroxypropyltrimonium Hydrolyzed Rice Bran Protein
Mostly natural · ISO 16128

Is Hydroxypropyltrimonium Hydrolyzed Rice Bran Protein natural?

Mostly. Rice bran protein hydrolysate and mineral-derived chloride are natural; the 2-hydroxypropyl trimethylammonium group comes from petrochemical epichlorohydrin and trimethylamine.

INCI nameHydroxypropyltrimonium Hydrolyzed Rice Bran Protein
FunctionAntistatic · Hair Conditioning
FeedstockRice bran protein is hydrolysed, then reacted with…

How we scored it

Substituent assumed 10 wt% (about 0.9% quaternary N): hydroxypropyltrimonium C6H15NO 117.2 petrochemical = 7.7%; chloride 35.5 mineral = 2.3%; protein 90%. Natural = 92.3%.
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

Rice bran protein is hydrolysed, then reacted with glycidyltrimethylammonium chloride made from epichlorohydrin and trimethylamine. The degree of quaternisation is not published, so about 10 wt% substituent was assumed.

In plain English

Rice bran protein broken into small pieces and given a positive charge so it clings to hair and skin, where it conditions and reduces static. The protein comes from rice bran; the charged group is added using synthetic petrochemical-derived chemicals.

CosIng definition: 1-Propanaminium, 2-hydroxy-N,N,N-trimethyl-, 3-(rice bran protein hydrolyzates) derivs., chloride

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