How we scored it
Sulfated polysaccharide extracted directly from red seaweed; whole botanical/algal material, this site's convention 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
Extracted from red seaweeds of the Gigartinaceae or Solieriaceae families by hot aqueous or alkaline extraction and precipitation. No synthetic alternative exists.
In plain English
A gelling and thickening agent extracted from red seaweed. It has been used in foods and skincare for centuries and needs only extraction and purification, no chemical synthesis.
CosIng definition: Carrageenan is the plant material obtained from various members of the Gigartinaceae or Solieriaceae families of the red seaweed, Rodophyceae.
Structure
zinc;1-(5-cyano-2-pyridinyl)-3-[2-(6-fluoro-2-hydroxy-3-propanoylphenyl)cyclopropyl]urea;diacetate
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.
- 2Carrageenan. PubChem CID 78126884. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3CARRAGEENAN. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4CARRAGEENAN. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CARRAGEENAN