Algin

Algin is a natural polysaccharide from brown seaweed, commonly used as sodium alginate in cosmetic formulations. It thickens and stabilizes water-based systems while forming a flexible film that improves glide and moisture-holding feel.
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Ingredient Snapshot

Overview
A seaweed derivative that helps thicken formulas and hold in moisture.
Category
Skin Conditioning
Type
Thickener

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Creates a breathable veil that helps hold water on the skin for a plumper, softer feel. Can reduce the sensation of dryness by minimizing transepidermal water loss on the surface.

Uses In Skincare & Cosmetics

Used in peel-off masks, gel serums, and lotions to add body and improve spread. Also found in hand creams and after-sun gels for a smooth application experience.

Comedogenic Rating

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

Safety

Low likelihood of irritation; higher levels may feel tightening or leave a slight residue. Rare sensitivities can occur, so patch test if your skin is easily reactive.

Is Algin a Good Ingredient?

Rated Good: a dependable seaweed polysaccharide that improves slip and creates a lightweight film to help retain surface moisture, with a long record of low irritation. It supports texture and feel rather than delivering active treatment effects.

Products with Algin

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