Lithothamnion calcareum extract is a marine botanical derived from red algae that supplies trace minerals and polysaccharides. It lightly conditions skin, adds watery hydration, and improves glide and spreadability in formulas.
A red algae extract that adds light hydration and a soft feel.
Category
Skin Conditioning, Soothing
Type
Botanical Extract
Ratings
Overall Rating
Fair
Comedogenic Risk
None
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is Lithothamnioncalcareum Extract (Red Algae) a Good Ingredient?
Fair fits: the mineral and polysaccharide content offers light conditioning, but clinical support is modest. Marine-derived materials like this can also bother those sensitive to seaweed or iodine.
What it does
Skin Benefits
Lightly boosts surface hydration and leaves skin feeling soft and comfortable without heaviness, though the supporting data are limited.
Where you'll find it
Uses in Skincare & Cosmetics
Used in serums, gel creams, and moisturizers, as well as hydrating essences and sheet masks for a light, watery skin feel.
Before you use it
Safety
Typically well tolerated with low irritation potential, but patch test if you're reactive to marine ingredients or iodine. No widely recognized cosmetic-use restrictions.
Products with Lithothamnioncalcareum Extract (Red Algae)