How we scored it
Protein built from amino acids, extracted from animal tissue; scores amino-acid-based material 1.0 regardless of shown repeat-unit formula.
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
Extracted from mammalian connective tissue (e.g., bovine ligament) by physical or enzymatic isolation. No synthetic route is used commercially.
In plain English
A structural protein from animal connective tissue, used to firm and smooth skin in anti-ageing products. It's extracted directly from natural animal sources rather than synthesised.
CosIng definition: Elastins. An insoluble protein extracted from mammalian organisms
Structure
(2S)-1-[(2S)-2-[[2-[[(2S,3S)-2-[[(2S)-2-acetamido-4-methylpentanoyl]amino]-3-methylpentanoyl]amino]acetyl]amino]-3-methylbutanoyl]-N-methylpyrrolidine-2-carboxamide
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.
- 2Elastin. PubChem CID 439221. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3ELASTIN. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4ELASTIN. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=ELASTIN