Gigartina Stellata Extract
Red algae extract from Gigartina stellata. The manufacturer claims moisturising, protective, and 'antiviral' effects on skin. A close relative is Chondrus Crispus (Irish moss), which has its own DB card. Topical evidence is limited; claimed effects are extrapolated from in vitro data on carrageenans, the polysaccharides of these algae.
Evidence by route
Topical application
DVery weak or conflicting data.
Topical clinical studies are essentially absent. Antioxidant and moisturising activity is confirmed only in laboratory models; clinical extrapolation to skincare benefit is not established.
- Wijesekara I et al. Carbohydr Polym. 2011;84(1):14-21.
Tolerability and safety
Irritation potential
LowAllergen risk
LowPregnancy
SafeSkin types
Suitable for
Frequently asked questions
Is Gigartina Stellata Extract safe during pregnancy?
Gigartina Stellata Extract is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Gigartina Stellata Extract for?
Gigartina Stellata Extract suits: normal, dry, combination, sensitive.