Good Cosmetic Ingredient NOAEL Data

Theobromine

INCI: THEOBROMINE

CAS Number
83-67-0
Function
Skin-conditioning agent (methylxanthine class, related to caffeine and theophylline)
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes CIR Expert Panel concluded safe in cosmetics in present practices of use and concentration (2024 assessment)

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Toxicological Studies

10 study endpoints found for Theobromine. 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
NOAEL 800 mg/kg bw/day oral rat Short Term Toxicity COSMOS_DB
NOAEL 75 mg/kg bw/day oral rabbit Developmental COSMOS_DB
NOAEL 21 mg/kg bw/day oral rabbit Developmental COSMOS_DB
NOAEL 53 mg/kg bw/day oral rat Developmental COSMOS_DB
NOAEL 1500 mg/kg bw/day oral mouse Short Term Toxicity COSMOS_DB
NOAEL 375 mg/kg bw/day oral mouse Reproductive COSMOS_DB
NOAEL 750 mg/kg bw/day oral mouse Reproductive COSMOS_DB
NOAEL 88.2 mg/kg bw/day oral rabbit Subchronic COSMOS_DB
NOAEL 250 mg/kg bw/day oral rat Chronic COSMOS_DB
NOAEL 250 mg/kg bw/day oral rat Subchronic COSMOS_DB

Expert Verdict

Pharmacologically active vasodilator and diuretic at systemic levels; ensure use concentrations remain within CIR-reviewed range.

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Concern Level: Low

Regulatory Flags

fda_food_additive

Frequently Asked Questions

Is Theobromine safe in cosmetics?

Pharmacologically active vasodilator and diuretic at systemic levels; ensure use concentrations remain within CIR-reviewed range. The EU classifies Theobromine as "permitted". Safety rating: GOOD. 10 toxicological study endpoint(s) are available in our database.

Is Theobromine allowed in the EU?

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

What does Theobromine do in cosmetics?

Theobromine functions as: Skin-conditioning agent (methylxanthine class, related to caffeine and theophylline). It is classified as a cosmetic ingredient in our database. CAS number: 83-67-0.

What is the Margin of Safety for Theobromine?

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.

What is the NOAEL for Theobromine?

The NOAEL (No Observed Adverse Effect Level) for Theobromine is 800 mg/kg bw/day based on a Short Term Toxicity study via oral route in rat. A total of 10 study endpoints are available. Source: COSMOS_DB.

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