Database/Antistatic/Hydroxypropyltrimonium Hydrolyzed Milk Protein
Mostly natural · ISO 16128

Is Hydroxypropyltrimonium Hydrolyzed Milk Protein natural?

Mostly. The milk peptide and the chloride are natural; the quaternary ammonium group attached to it is petrochemical.

INCI nameHydroxypropyltrimonium Hydrolyzed Milk Protein
FunctionAntistatic · Hair Conditioning
FeedstockHydrolysed milk protein reacted with glycidyltrimethylammonium chloride.

How we scored it

Assume about 1,000 Da of milk peptide (natural) per hydroxypropyltrimethylammonium group (about 130 Da, petrochemical, from glycidyltrimethylammonium chloride) with its chloride (35 Da, natural): (1000 + 35)/1165 → 0.89. Same method as Hydroxypropyltrimonium Hydrolyzed Wheat Protein and Collagen.
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

Hydrolysed milk protein reacted with glycidyltrimethylammonium chloride.

In plain English

Milk protein broken into smaller pieces and given a mild positive charge, used in hair care to boost conditioning and manageability.

CosIng definition: Hydroxypropyltrimonium Hydrolyzed Milk Protein is the quaternary ammonium chloride formed from the reaction of Hydroxypropyl trimethylamine and Hydrolyzed Milk Protein

Natural alternatives with the same function

Acronychia Acidula Fruit Extract 100% natural origin

An extract of lemon aspen, an Australian native fruit, used to condition skin and hair and help hold…

 Alanine 100% natural origin

An amino acid used for skin and hair conditioning, part of skin's natural moisturising factor. Made by fermenting…

 Arginine 100% natural origin

An amino acid found in skin and hair proteins, used for conditioning and moisture-binding. Made by fermenting plant…

 Asparagine 100% natural origin

An amino acid made by fermenting plant sugars, similar to other food-fermentation processes. Helps condition hair and skin…

 Aspartic Acid 100% natural origin

An amino acid used for skin conditioning and moisture retention. Usually produced by fermentation or by an enzyme…

 Capryloyl Hydrolyzed Collagen 100% natural origin

Collagen broken into small protein fragments and attached to caprylic acid, an eight-carbon fatty acid from coconut or…

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 MILK PROTEIN. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3HYDROXYPROPYLTRIMONIUM HYDROLYZED MILK 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%20MILK%20PROTEIN