How we scored it
Whole extract of the red seaweed Porphyra yezoensis (nori); botanical and algal extracts are scored 1.0 by this site's convention, so natural mass/total mass = 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
Cultivated nori seaweed (Porphyra yezoensis), extracted with water or glycerin.
In plain English
An extract of nori, the red seaweed used in sushi, valued in skincare for its moisturising sugars and amino acids. It is a wholly natural, sea-grown ingredient.
CosIng definition: Porphyra Yezoensis Extract is an extract of the Alga, Porphyra yezoensis, Bangiaceae
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.
- 2PORPHYRA YEZOENSIS EXTRACT. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3PORPHYRA YEZOENSIS EXTRACT. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=PORPHYRA%20YEZOENSIS%20EXTRACT