Gelidiella acerosa extract
AKA “Red Alga”
Extract
Ingredient Facts
Gelidiella acerosa extract
AKA: Red Alga
Extract · Skin Protecting · EWG: 1
Plant-Derived
Barrier Support
Extract
Clean
Gelidiella Acerosa Extract is an extract of the Red Alga, Gelidiella acerosa, Gelidiaceae
Family
Gelidiellaceae
Plant Part
Thallus
CAS #
223749-81-1
Form
Liquid
See origin →
Functions
Skin Protecting
Helps rebuild and strengthen your skin barrier — the invisible shield that keeps moisture in and irritants out. Essential after over-exfoliating or harsh weather.
Nourishes & Protects
Traditional Use
A red seaweed traditionally used in Indian Ayurvedic medicine and coastal South Asian folk preparations for skin health and as a marine nutritive ingredient, though specific historical applications are less documented than other seaweeds.
Skin Types
●all-skin-types
Best For
Dullness
Pregnancy & Breastfeeding Safe
Yes
UV Photoprotection, Cytotoxicity and Immunology Capacity of Red Algae Extracts.
Álvarez-Gómez F, Korbee N, Casas-Arrojo V, Abdala-Díaz RT, Figueroa FL
Molecules (Basel, Switzerland), 2019
Valorization of the Red Algae Gelidium sesquipedale by Extracting a Broad Spectrum of Minor Compounds Using Green Approaches.
Castejón N, Parailloux M, Izdebska A, Lobinski R, Fernandes SCM
Marine drugs, 2021
Final Report: Safety Assessment of Red Algae-Derived Ingredients as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Gelidiella Acerosa Extract
European Commission
EU Cosmetic Ingredient Database (CosIng)
Porphyra umbilicalis (red algae) extract
European Commission
EU Cosmetic Ingredient Database (CosIng)
Gelidiella Acerosa Extract
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Porphyra umbilicalis (red algae) extract
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Optimized and standardized isolation and structural characterization of anti-inflammatory sulfated polysaccharides from the red alga Delesseria sangui
Grünewald N, Alban S
Biomacromolecules, 2009
Verified Jun 2026
Data: CosIng · EWG · CIR