How we scored it
Tripeptide of cystine, Gly and Pro only; no acyl cap named, no formula supplied. All atoms from amino acids: 1.00.
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
Amino acids from protein hydrolysis or fermentation are joined by peptide synthesis. No alternative route changes the value.
In plain English
A short chain of amino acids (cystine, glycine and proline) used to condition skin. Cystine is a sulfur-containing amino acid obtained from protein hydrolysis or fermentation, and the chain is assembled in a factory.
CosIng definition: Tripeptide-15 is a synthetic peptide consisting of cystine, glycine and proline; Cystine, synthetic tripeptide with glycine and proline
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.
- 2TRIPEPTIDE-15. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3TRIPEPTIDE-15. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=TRIPEPTIDE-15