Cl
Cladosiphon Okamuranus Extract
Cladosiphon Okamuranus ExtractHydrator
Okinawan mozuku seaweed. Its fucoidan pulls water into skin and holds it there for a cushiony feel.
What it does
It pulls water into the skin’s surface, holds it there and gives products a cushiony feel. Its key part is fucoidan, a large sugar molecule. It comes from mozuku, a brown seaweed harvested off Okinawa.
The evidence, graded
expert consensusUS safety reviewers (2026) assessed 82 ingredients from brown seaweeds, which products use most often to condition skin. They judged 68 safe as used, Cladosiphon okamuranus, Fucus vesiculosus, Laminaria ochroleuca and Alaria esculenta extracts among them, and found too little data to judge the other 14. They noted that heavy metals, arsenic and pesticide residues may be present, and asked makers to keep them low.Ferguson 2026 · International Journal of Toxicology ↗
Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.
Also known as
mozuku seaweed extract, okinawa mozuku
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