Ichthammol

INCI: ICHTHAMMOL

CAS Number
8029-68-3 [^1_16][^1_17]
Function
Anti-seborrheic, antimicrobial, anti-inflammatory (ammonium bituminosulfonate)
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status restricted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted โ€” USP monograph exists; used in OTC topical products

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.

Expert Verdict

Eye irritant (Xi classification, R36); strong characteristic odour limits formulation flexibility; no carcinogenic, teratogenic, or mutagenic properties identified; no photosensitizing or phototoxic effects observed; dark colour may stain formulations

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Concern Level: Moderate

Regulatory Flags

potential-allergen

Frequently Asked Questions

Is Ichthammol safe in cosmetics?

Eye irritant (Xi classification, R36); strong characteristic odour limits formulation flexibility; no carcinogenic, teratogenic, or mutagenic properties identified; no photosensitizing or phototoxic effects observed; dark colour may stain formulations The EU classifies Ichthammol as "restricted". Safety rating: GOOD.

Is Ichthammol allowed in the EU?

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

What does Ichthammol do in cosmetics?

Ichthammol functions as: Anti-seborrheic, antimicrobial, anti-inflammatory (ammonium bituminosulfonate). It is classified as a cosmetic ingredient in our database. CAS number: 8029-68-3 [^1_16][^1_17].

What is the Margin of Safety for Ichthammol?

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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