Sulfurated polysaccharide (linear sulfated galactan) formed by a dimer of alternating units of α-D-1,3 and β-D-1,4-galacto-pyranose; Soluble in water or an aqueous phase; Insoluble in oils and organic solvents; Molecular weight between 10^5 and 10^6 Da approximately.
Ionic solution, colloidal solution, emulsion, suspension with dispersing phase.
All types of skin and hair.
Commonly known as:
Beta-carrageenan, Red algae extract, Carrageenan.
Dosage required in cosmetic products:
From 0.1 to 3%.
Part of the plant extracted:
Moisturizer, gelling agent, antioxidant, anti-bacterial, sheathing.
Vegetable (red algae).
Cleaning and sun-drying of the seaweed to eliminate sand and all non-algal materials, extraction of the plant tissues in a hot alkaline sodium hydroxide solution under vigorous agitation, filtration of the extract obtained under pressure, precipitation in alcohol (most often isopropanol), pressing of the coagulum obtained to eliminate as much liquid as possible, drying and grinding of the material to form a powder.
I.N.C.I. list name:
Sodium Carrageenan, Maris Sal (Sea Salt).