Moderate Cosmetic Ingredient NOAEL Data Sensitization Data

Carvacrol

INCI: CARVACROL

CAS Number
499-75-2
Function
Perfuming Agent, Antimicrobial, Antioxidant
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes GRAS status under 21 CFR 172.515 (synthetic flavoring substances). FEMA 2245.

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

7 study endpoints found for Carvacrol. 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 8 mg/kg bw/day oral rat oral REACH
NOEL 8 mg/kg bw/day oral - oral REACH
NOAEL 500 mg/kg bw/day oral rat oral REACH
NOAEL 400 mg/kg bw/day oral rat oral REACH
NOAEL 500 mg/kg bw/day oral rat oral REACH
NOAEL 500 mg/kg bw/day other rat oral REACH
NOAEL 500 mg/kg bw/day other rat oral REACH

Sensitization Profile

Contact sensitization data for Carvacrol based on clinical patch test studies and IFRA standards.

Sensitization Rate
low
Allergen Class
fragrance
EU Allergen Listed
no
Patch Test Positive Rate
0.2%
Cross-reactivity Group
none
Reaction Type
contact-dermatitis

Source: IVDK; literature review

Expert Verdict

Carvacrol is permitted in EU and US cosmetics as a fragrance/flavoring agent but carries significant sensitization risk due to H317 Skin Sensitizer 1 classification, requiring careful concentration control and risk assessment in formulations.

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Concern Level: High

Regulatory Flags

ifra_fragrance fda_food_additive jecfa_safe

Frequently Asked Questions

Is Carvacrol safe in cosmetics?

Carvacrol is permitted in EU and US cosmetics as a fragrance/flavoring agent but carries significant sensitization risk due to H317 Skin Sensitizer 1 classification, requiring careful concentration control and risk assessment in formulations. The EU classifies Carvacrol as "permitted". Safety rating: MODERATE. 7 toxicological study endpoint(s) are available in our database.

Is Carvacrol allowed in the EU?

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

What does Carvacrol do in cosmetics?

Carvacrol functions as: Perfuming Agent, Antimicrobial, Antioxidant. It is classified as a Cosmetic Ingredient in our database. CAS number: 499-75-2.

What is the Margin of Safety for Carvacrol?

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 Carvacrol?

The NOAEL (No Observed Adverse Effect Level) for Carvacrol is 8 mg/kg bw/day based on a oral study via oral route in rat. A total of 7 study endpoints are available. Source: REACH.

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