How we scored it
Free amino acid; scored 1.0 as fermentation/protein-hydrolysate product.
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
Produced industrially by microbial fermentation or by hydrolysis of natural proteins. No petrochemical feedstock is used.
In plain English
An amino acid used as a conditioning ingredient for hair and skin. Produced by fermentation or hydrolysis of natural proteins.
Structure
(2S)-2-amino-3-(4-hydroxyphenyl)propanoic 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.
- 2Tyrosine. PubChem CID 6057. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3TYROSINE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4TYROSINE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=TYROSINE