Cucurbitacin B

INCI: CUCURBITACIN B

CAS Number
6199-67-3
Function
Skin conditioning
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Not specifically prohibited or restricted; the FDA does not maintain a positive list for cosmetic ingredients, so the manufacturer bears responsibility for safety substantiation

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

High caution required. Cucurbitacin B is a cytotoxic tetracyclic triterpenoid with documented anti-proliferative, pro-apoptotic, and hepatotoxic effects at elevated doses; systemic toxicity is a concern if used at inappropriate concentrations; thorough safety assessment mandatory before formulation. Intensely bitter compound found in wild cucurbits; studied extensively in oncology research for anti-tumor activity; anti-inflammatory properties at very low concentrations; requires precise dose ...

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Concern Level: High

Frequently Asked Questions

Is Cucurbitacin B safe in cosmetics?

High caution required. Cucurbitacin B is a cytotoxic tetracyclic triterpenoid with documented anti-proliferative, pro-apoptotic, and hepatotoxic effects at elevated doses; systemic toxicity is a concern if used at inappropriate concentrations; thorough safety assessment mandatory before formulation. Intensely bitter compound found in wild cucurbits; studied extensively in oncology research for anti-tumor activity; anti-inflammatory properties at very low concentrations; requires precise dose ... The EU classifies Cucurbitacin B as "permitted". Safety rating: MODERATE.

Is Cucurbitacin B allowed in the EU?

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

What does Cucurbitacin B do in cosmetics?

Cucurbitacin B functions as: Skin conditioning. It is classified as a cosmetic ingredient in our database. CAS number: 6199-67-3.

What is the Margin of Safety for Cucurbitacin B?

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.

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