Database/Hair Conditioning/Dipeptide-9
100% natural origin · ISO 16128

Is Dipeptide-9 natural?

Yes. Both residues are fermentation-derived amino acids; the peptide bond adds no petrochemical mass.

INCI nameDipeptide-9
CAS17105-15-6
FormulaC11H21N3O5 · 275.30 Da
FunctionHair Conditioning · Humectant
FeedstockMade by joining glutamic acid and lysine, fermentation…

How we scored it

Dipeptide of glutamic acid + lysine (C11H21N3O5=275.3 matches); condensation water lost only → 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

Made by joining glutamic acid and lysine, fermentation amino acids, via a peptide bond. No petrochemical route is used.

In plain English

A two-amino-acid peptide made from glutamic acid and lysine, used to condition hair and skin and help hold in moisture.

CosIng definition: Dipeptide-9 is a synthetic peptide consisting of glutamic acid and lysine

Structure

2D structure of Dipeptide-9

(2S)-2-amino-6-[[(4S)-4-amino-4-carboxybutanoyl]amino]hexanoic acid

PubChem CID 7015685 ↗

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. 2Dipeptide-9. PubChem CID 7015685. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3DIPEPTIDE-9. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4DIPEPTIDE-9. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=DIPEPTIDE-9