Pyrogallol

INCI: PYROGALLOL [^1_9]

CAS Number
87-66-1 [^1_8][^1_3]
Function
Hair Dyeing agent (historical); Antioxidant / Reducing agent [^1_8]
Safety Rating
POOR

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status prohibited
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes VCRP reports only 1 use (2023) in "other hair coloring." CIR originally concluded "safe" (1991) but re-review opened 2024 due to NTP carcinogenicity data [^1_8]

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

๐Ÿšซ EU-banned. NTP 2-yr dermal study: equivocal evidence of carcinogenicity in male mice (squamous cell papilloma), some evidence in female mice (squamous cell carcinoma). Mutagenic in Ames test (TA100). In vitro corrosive to reconstructed human epidermis. Hepatotoxic in animal studies. Confirmed skin sensitizer. Do NOT formulate. [^1_8][^1_9]

โš ๏ธ
Concern Level: High

Regulatory Flags

potential-allergen eu_banned_cosmetics eu_cosing_listed

Frequently Asked Questions

Is Pyrogallol safe in cosmetics?

๐Ÿšซ EU-banned. NTP 2-yr dermal study: equivocal evidence of carcinogenicity in male mice (squamous cell papilloma), some evidence in female mice (squamous cell carcinoma). Mutagenic in Ames test (TA100). In vitro corrosive to reconstructed human epidermis. Hepatotoxic in animal studies. Confirmed skin sensitizer. Do NOT formulate. [^1_8][^1_9] The EU classifies Pyrogallol as "prohibited". Safety rating: POOR.

Is Pyrogallol allowed in the EU?

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

What does Pyrogallol do in cosmetics?

Pyrogallol functions as: Hair Dyeing agent (historical); Antioxidant / Reducing agent [^1_8]. It is classified as a cosmetic ingredient in our database. CAS number: 87-66-1 [^1_8][^1_3].

What is the Margin of Safety for Pyrogallol?

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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