Corthellus Shiitake Extract

INCI: CORTHELLUS SHIITAKE EXTRACT

CAS Number
Not assigned (note: Lentinula edodes / Lentinus edodes extracts have CAS 96690-47-8, but this specific INCI uses the Corthellus nomenclature)
Function
Skin Protecting
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes FDA: no specific restriction; shiitake extracts broadly accepted in cosmetics

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Shiitake dermatitis (flagellate erythema) is a food-consumption phenomenon, not a cosmetic contact issue. Beta-glucan content is the primary active with a good safety profile. Taxonomic note: Corthellus is an older/alternate classification; verify supplier species confirmation as Lentinula edodes.

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Concern Level: Low

Regulatory Flags

plant-extract

Frequently Asked Questions

Is Corthellus Shiitake Extract safe in cosmetics?

Shiitake dermatitis (flagellate erythema) is a food-consumption phenomenon, not a cosmetic contact issue. Beta-glucan content is the primary active with a good safety profile. Taxonomic note: Corthellus is an older/alternate classification; verify supplier species confirmation as Lentinula edodes. The EU classifies Corthellus Shiitake Extract as "permitted". Safety rating: GOOD.

Is Corthellus Shiitake Extract allowed in the EU?

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

What does Corthellus Shiitake Extract do in cosmetics?

Corthellus Shiitake Extract functions as: Skin Protecting. It is classified as a cosmetic ingredient in our database. CAS number: Not assigned (note: Lentinula edodes / Lentinus edodes extracts have CAS 96690-47-8, but this specific INCI uses the Corthellus nomenclature).

What is the Margin of Safety for Corthellus Shiitake Extract?

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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