How we scored it
Nucleoside produced by microbial fermentation, analogous to adenosine — natural throughout → 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
Cytidine is a nucleoside produced commercially by microbial fermentation, the same process used for related nucleosides like adenosine. No petrochemical synthesis route is used.
In plain English
A nucleoside naturally found in RNA and produced by fermentation, used to condition and protect the skin.
Structure
4-amino-1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]pyrimidin-2-one
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.
- 2Cytidine. PubChem CID 6175. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3CYTIDINE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4CYTIDINE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CYTIDINE