Algae
INCI: Hydrolyzed Algae Extract
Reviewed by Rosie · Last updated 18 Aug 2026
Also known as: Hydrolyzed Algae Extract
Algae are simple, chlorophyll-containing organisms in a family that includes more than 20,000 different known species In cosmetics, algae act as thickening agents, water-binding agents, and antioxidants
Best For Skin Types
All skin types
Usage Frequency
As directed on product packaging
EWG Safety Score
Algae products at Skintique
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What Is Algae?
Algae are very simple, chlorophyll-containing organisms in a family that includes more than 20,000 different known species. In cosmetics, algae act as thickening agents, water-binding agents, and antioxidants.
Some algae are also potential skin sensitizers. For example, the phycocyanin present in blue-green algae has been suspected of sensitization on the basis of patch tests.
Other forms of algae, such as Irish moss and carrageenan, contain proteins, vitamin A, sugar, starch, vitamin B1, iron, sodium, phosphorus, magnesium, copper, and calcium. Most of these are beneficial for skin, as emollients, soothing agents, or antioxidants.
New research shows forms of brown algae show promise for improving the appearance of ageing skin. As a plant ingredient, all types of algae are prone to breaking down with routine exposure to air and light. Because of this, avoid anti-ageing products with algae that are packaged in jars.
Benefits for Your Skin
Clinical Evidence & References
Published Research
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Algae in cosmetics: Antioxidant and moisturizing benefits Mar Drugs, 2015
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Akebia Quinata (Chocolate Vine) Stem Extract
Stem from a vining plant whose flowers smell like chocolate. Good source of soothing, redness-reducing antioxidants.
Alchemilla Vulgaris Leaf Extract
A plant extract with antioxidant and mild astringent properties
Aletris Farinosa Root Extract
A plant-derived antioxidant traditionally used in herbal practice, now appearing in skincare formulations
Algae Extract
Comes from algae, very simple, chlorophyll-containing organisms Help thicken formulas
Allantoin Ascorbate
A stabilised vitamin C derivative combined with skin-conditioning allantoin
Allium Sativum Garlic Bulb Extract
Touted as a skin conditioning agent Backed by research for purifying properties
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