How we scored it
Residues of Tetrapeptide-29 not stated; description shows only a peptide plus arginine amide, no acyl cap. Assumed all atoms from amino acids = 1.00; amide NH2 not penalised.
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 sugar fermentation or protein hydrolysis are joined by peptide synthesis, then reacted with arginine to give the amide. No alternative route is known.
In plain English
A short peptide (a chain of four amino acids) combined with arginine, used to condition hair. The amino acids are expected to come from fermentation or plant protein and are linked together in a factory.
CosIng definition: Tetrapeptide-29 Argininamide is the product obtained by the reaction of Tetrapeptide-29 and Arginine.
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.
- 2TETRAPEPTIDE-29 ARGININAMIDE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3TETRAPEPTIDE-29 ARGININAMIDE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=TETRAPEPTIDE-29%20ARGININAMIDE