Pelvetia siliquosa extract
AKA “Alga”
Extract
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Ingredient Facts
Pelvetia siliquosa extract
AKA: Alga
Extract · Antioxidant · EWG: 4
Plant-Derived
Antioxidant
Humectant
Barrier Support
Extract
Not Clean
Pelvetia Siliquosa Extract is the extract of the Alga, Pelvetia siliquosa
Family
Fucaceae
Plant Part
Whole Plant
CAS #
-
Form
Liquid
See origin →
Functions
Antioxidant
Fights free radicals — the unstable molecules from UV, pollution, and stress that break down collagen and cause premature aging.
Humectant
A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.
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
Locks In Moisture
Traditional Use
A brown seaweed traditionally used in Asian coastal communities for skin and hair health. Incorporated into modern cosmetics in recent decades for its humectant and nutrient-rich properties.
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
Anti-herpetic Activity of Macrocystis pyrifera and Durvillaea antarctica Algae Extracts Against HSV-1 and HSV-2.
Castillo E, Duarte LF, Corrales N, Álvarez DM, Farías MA et al.
Frontiers in microbiology, 2020
Final Report: Safety Assessment of Brown Algae-Derived Ingredients as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Final Report: Safety Assessment of Red Algae-Derived Ingredients as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Algae Exopolysaccharides
European Commission
EU Cosmetic Ingredient Database (CosIng)
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European Commission
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Nannochloropsis oculata (algae) extract
European Commission
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Pelvetia Siliquosa Extract
European Commission
EU Cosmetic Ingredient Database (CosIng)
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European Commission
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European Commission
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Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
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Environmental Working Group (EWG)
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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
In vivo UVB-photoprotective activity of extracts from commercial marine macroalgae.
Guinea M, Franco V, Araujo-Bazán L, Rodríguez-Martín I, González S
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 2012
RALGA (Diacneal), a retinaldehyde and glycolic acid assoc...
A D Katsambas
Dermatology (Basel, Switzerland), 2005
The Anti-melanogenesis Activities of Some Selected Red Macroalgae from Northern Coasts of the Persian Gulf.
Namjoyan F, Farasat M, Alishahi M, Jahangiri A, Mousavi H
Iranian journal of pharmaceutical research : IJPR, 2019
Breeding in the Economically Important Brown Alga Undaria pinnatifida: A Concise Review and Future Prospects.
Shan T, Pang S
Frontiers in genetics, 2021
Screening of Bioactive Properties in Brown Algae from the Northwest Iberian Peninsula.
Silva A, Rodrigues C, Garcia-Oliveira P, Lourenço-Lopes C, Silva SA et al.
Foods (Basel, Switzerland), 2021
Screening of Bioactive Properties in Brown Algae from the Northwest Iberian Peninsula.
Silva A, Rodrigues C, Garcia-Oliveira P, Lourenço-Lopes C, Silva SA et al.
Foods (Basel, Switzerland), 2021
Antioxidant screening and phenolic content of ethanol extracts of selected Baja California Peninsula macroalgae.
Tenorio-Rodriguez PA, Murillo-Álvarez JI, Campa-Cordova ÁI, Angulo C
Journal of food science and technology, 2017
Cyanobacteria and Red Macroalgae as Potential Sources of Antioxidants and UV Radiation-Absorbing Compounds for Cosmeceutical Applications.
Vega J, Bonomi-Barufi J, Gómez-Pinchetti JL, Figueroa FL
Marine drugs, 2020
Cyanobacteria and Red Macroalgae as Potential Sources of Antioxidants and UV Radiation-Absorbing Compounds for Cosmeceutical Applications.
Vega J, Bonomi-Barufi J, Gómez-Pinchetti JL, Figueroa FL
Marine drugs, 2020
Comprehensive Extraction and Biological Activities of Mycosporine-like Amino Acids and Glyceroglycolipids Extracts from Two Macroalgae Ecklonia kurome
Wei X, Hu X, Li T, Li Y, Yu Y et al.
Foods (Basel, Switzerland), 2025
Verified Jun 2026
Data: CosIng · EWG · CIR