Sulfated polysaccharide (sulfated linear galactan) formed from 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 skin typologies and hair types.
Commonly known as:
Beta-carrageenan, Red seaweed extract, Carrageenan.
Dosage required in cosmetic products:
From 0.1 to 3%.
Part of the plant extracted:
Moisturising, gelling, antioxidant, antibacterial, coating.
Plant (red algae).
The algae is cleaned and sun-dried to remove sand and all non-algal material, the plant tissues are then extracted by vigorously mixing them in an alkaline solution of hot sodium hydroxide, followed by pressure filtration, precipitation of the extract in alcohol (most often isopropanol), and pressing of the coagulum obtained to eliminate as much liquid as possible, before drying and grinding of the material to form a powder.
I.N.C.I. list name:
Sodium Carrageenan, Maris Sal (Sea Salt).