Seaweed Extract
INCI: Fucus Vesiculosus Extract
Also known as: Bladderwrack, Brown seaweed
BotanicalsantioxidantmarineAnecdotal evidencePregnancy safe
65
Skinlumis Rating
Comedogenic
0/5
Irritancy
1/5
Best applied
Both
Effective range
0.5%–5%
How It Works
Brown seaweed extract rich in fucoidan polysaccharides and iodine.
Fucoidan binds water and modulates inflammation; alginates form moisture films.
pH Range
5.0–7.0
Benefits
- Hydrating
- Anti-inflammatory
- Mineral-rich
Proven For
What the evidence supports.
DehydrationMild dullness
Best For
- All skin types
Avoid If
- Iodine sensitivity
Layering Order
4/10
Mid-routine serum or treatment step.
Max Safe Concentration
5%
Concentration range in well-formulated products: 0.5%–5%
Seasonal Use
Year-round.
Nutrition Connection
Edible seaweeds in Asian cuisine.
Skin Signals When You Need It
No specific deficiency signals tracked for this ingredient.
For Estheticians & Professionals
Patch test for iodine-sensitive thyroid clients.
Clinical Evidence
The research behind Seaweed Extract.
Every claim on this page traces to published research. Findings below are drawn from randomized trials and systematic reviews, each links to the study on PubMed.
Randomized Controlled Trial
Nano-hyaluronic acid significantly improved skin hydration and elasticity after 8 weeks.
Jegasothy SM, Zabolotniaia V, Bielfeldt S
Journal of Clinical and Aesthetic Dermatology, 2014
View Study →Journal of Clinical and Aesthetic Dermatology, 2014
Systematic Review
Oral collagen peptides at 2.5-10g daily significantly improved skin elasticity and reduced wrinkle depth after 8-12 weeks across 11 RCTs.
Choi FD, Sung CT, Juhasz MLW, Mesinkovska NA
Journal of Drugs in Dermatology, 2019
View Study →Journal of Drugs in Dermatology, 2019
Systematic Review
Estrogen deficiency following menopause causes 30% reduction in skin collagen within the first 5 years.
Wilkinson HN, Hardman MJ
Maturitas, 2017
View Study →Maturitas, 2017
Systematic Review
Chronic psychological stress elevates cortisol, accelerating skin aging through collagen degradation and barrier disruption.
Chen Y, Lyga J
Inflammation and Allergy Drug Targets, 2014
View Study →Inflammation and Allergy Drug Targets, 2014
Pairs Well With
Conflicts With
No flagged conflicts. Still, patch-test new actives.
Your Skin Compatibility
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