Poor Cosmetic Ingredient NOAEL Data

Phloroglucinol

INCI: PHLOROGLUCINOL

CAS Number
108-73-6
Function
Hair Dyeing Coupler, Antioxidant, Anti-Melanogenic
Safety Rating
POOR

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Used in oxidative hair dyes under special exemption in FD&C Act, provided product label carries required caution statement and patch-test instructions.

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
high
Sensitization
high

Calculate MoS for your specific formulation with the MoS Calculator.

Toxicological Studies

1 study endpoint found for Phloroglucinol. NOAEL (No Observed Adverse Effect Level) values are used to calculate the Margin of Safety per SCCS methodology.

Endpoint Value Route Species Study Type Source
NOEL 300 mg/kg bw/day oral rat oral REACH

Expert Verdict

CIR Expert Panel (1995) concluded insufficient data to determine safety due to positive genotoxicity in two assays, GHS Skin Sens. 1 classification, absent dermal absorption data, and lack of margin of safety calculation.

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Concern Level: High

Regulatory Flags

endocrine_disruptor eu_banned_cosmetics eu_cosing_listed

Frequently Asked Questions

Is Phloroglucinol safe in cosmetics?

CIR Expert Panel (1995) concluded insufficient data to determine safety due to positive genotoxicity in two assays, GHS Skin Sens. 1 classification, absent dermal absorption data, and lack of margin of safety calculation. The EU classifies Phloroglucinol as "permitted". Safety rating: POOR. 1 toxicological study endpoint(s) are available in our database.

Is Phloroglucinol allowed in the EU?

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

What does Phloroglucinol do in cosmetics?

Phloroglucinol functions as: Hair Dyeing Coupler, Antioxidant, Anti-Melanogenic. It is classified as a Cosmetic Ingredient in our database. CAS number: 108-73-6.

What is the Margin of Safety for Phloroglucinol?

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.

What is the NOAEL for Phloroglucinol?

The NOAEL (No Observed Adverse Effect Level) for Phloroglucinol is 300 mg/kg bw/day based on a oral study via oral route in rat. Source: REACH.

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