Database/Hair Conditioning/Proline
100% natural origin · ISO 16128

Is Proline natural?

Yes. Produced by fermenting plant sugars, or by hydrolysing natural collagen/gelatin, which is rich in proline.

INCI nameProline
CAS147-85-3
FormulaC5H9NO2 · 115.13 Da
FunctionHair Conditioning · Skin Conditioning
FeedstockMade by fermentation of plant sugars, or recovered…

How we scored it

Standard amino acid; fermentation of plant sugars or collagen/gelatin hydrolysate → 100% natural
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 fermentation of plant sugars, or recovered from hydrolysed natural collagen/gelatin.

In plain English

An amino acid abundant in collagen, used to condition hair and skin. Sourced from fermented plant sugars or hydrolysed natural collagen and gelatin.

Structure

2D structure of Proline

(2S)-pyrrolidine-2-carboxylic acid

PubChem CID 145742 ↗

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. 2Proline. PubChem CID 145742. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3PROLINE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4PROLINE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=PROLINE