Fucosterol

INCI: FUCOSTEROL

CAS Number
17605-67-3
Function
Antioxidant, Skin Conditioning – Emollient
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes Permitted — phytosterols previously reviewed and found safe by CIR; brown algae (source organism) GRAS per 21 CFR 184.1120

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
negligible
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Source-dependent heavy metal and arsenic contamination possible if derived from brown algae; ensure supplier CoA specifies heavy metal limits

⚠️
Concern Level: Moderate

Frequently Asked Questions

Is Fucosterol safe in cosmetics?

Source-dependent heavy metal and arsenic contamination possible if derived from brown algae; ensure supplier CoA specifies heavy metal limits The EU classifies Fucosterol as "permitted". Safety rating: GOOD.

Is Fucosterol allowed in the EU?

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

What does Fucosterol do in cosmetics?

Fucosterol functions as: Antioxidant, Skin Conditioning – Emollient. It is classified as a cosmetic ingredient in our database. CAS number: 17605-67-3.

What is the Margin of Safety for Fucosterol?

not established 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.

📱

Is Fucosterol in Your Products?

Scan any product label with Piro — our free ingredient scanner. Point your camera at the ingredients list and get instant safety scores for every ingredient.

Try Piro Free →

Analyze Your Full Ingredient List

Paste any INCI list into the Decoder for instant safety analysis, or calculate the Margin of Safety for Fucosterol in your formulation.