How we scored it
Glycerol (natural) + 2 fatty acyl chains (natural, oleochemical) + phosphate (mineral) + serine (natural amino acid), assembled by esterification. 792/792 = 1.0.
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
Phosphatidylserine is a phospholipid built from glycerin, two natural fatty acids, mineral phosphate and the amino acid serine, typically derived from soy or sunflower lecithin. No petrochemical route is used commercially.
In plain English
A natural fat-based ingredient that helps condition skin and hair and stabilise emulsions. It is built from glycerin, plant or animal fatty acids and phosphate, similar to phospholipids found in cell membranes.
CosIng definition: Fatty acid diglycerides, phosphate monoesters, 2-amino-2-carboxyethyl ester
Structure
(2S)-2-amino-3-[[(2R)-2,3-di(octadecanoyloxy)propoxy]-hydroxyphosphoryl]oxypropanoic acid
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.
- 2Phosphatidylserine. PubChem CID 9547096. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3PHOSPHATIDYLSERINE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4PHOSPHATIDYLSERINE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=PHOSPHATIDYLSERINE