Lithothamnion Calcareum Extract

Lithothamnion calcareum extract is a marine ingredient from calcified red algae, containing calcium and trace minerals. Formulas use it for skin conditioning, a soft-touch feel, and oil control, though topical evidence is limited.
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Ingredient Snapshot

Overview
A mineral-rich algae extract that softens skin and controls shine.
Category
Skin Conditioning, Oil Control
Type
Botanical Extract

Ingredient Ratings

Overall Rating

Fair

Comedogenic Risk

None

Skin Benefits

May help skin feel supple while contributing to a less shiny finish, though human data for topical benefits remains limited.

Uses In Skincare & Cosmetics

Found in moisturizers, mattifying lotions, and toners to lend a soft-touch feel and help control surface sheen.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Generally low irritation, but those sensitive to marine or algae-derived ingredients should patch test. If dryness or tightness occurs from the mattifying effect, reduce frequency or layer with moisturizer.

Is Lithothamnion Calcareum Extract a Good Ingredient?

The mineral-rich content may support a soft, mattified feel, but human evidence for direct skin benefits is limited, which keeps the rating at Fair. Some individuals may also experience mild sensitivity to marine-derived extracts.