Fucus Vesiculosus

INCI: FUCUS VESICULOSUS

CAS Number
Not assigned (whole organism/dried thallus)
Function
Skin conditioning; used in thalassotherapy and folk medicine preparations
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted โ€” brown algae GRAS per 21 CFR 184.1120; present in OTC weight loss products (21 CFR 310.545) though efficacy not established

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
low
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Estrogenic activity demonstrated at 175โ€“350 mg/kg/day oral with dose-dependent effects on estrous cycle length and serum estradiol levels; competes for estrogen and progesterone receptor binding. Heavy metal and arsenic contamination risk; iodine content variability requires monitoring.

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Concern Level: Moderate

Frequently Asked Questions

Is Fucus Vesiculosus safe in cosmetics?

Estrogenic activity demonstrated at 175โ€“350 mg/kg/day oral with dose-dependent effects on estrous cycle length and serum estradiol levels; competes for estrogen and progesterone receptor binding. Heavy metal and arsenic contamination risk; iodine content variability requires monitoring. The EU classifies Fucus Vesiculosus as "permitted". Safety rating: GOOD.

Is Fucus Vesiculosus allowed in the EU?

Fucus Vesiculosus EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Fucus Vesiculosus do in cosmetics?

Fucus Vesiculosus functions as: Skin conditioning; used in thalassotherapy and folk medicine preparations. It is classified as a cosmetic ingredient in our database. CAS number: Not assigned (whole organism/dried thallus).

What is the Margin of Safety for Fucus Vesiculosus?

adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

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