Good Cosmetic Ingredient

Cyclopentane Carboxylic Acid

INCI: CYCLOPENTANE CARBOXYLIC ACID

CAS Number
Cyclopentanecarboxylic acid parent CAS; cosmetic references focus on sodium salt used as surfactant.
Function
Cleansing/surfactant (for sodium salt); parent acid is a small organic acid intermediate which can be neutralized in situ
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes No specific FDA cosmetic restriction; treated as cleansing agent similar to other mild anionic surfactants

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Over-concentration or high leave-on levels may increase irritation, especially on compromised skin; confirm biodegradability and aquatic toxicity if heavy use.

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Concern Level: Low

Frequently Asked Questions

Is Cyclopentane Carboxylic Acid safe in cosmetics?

Over-concentration or high leave-on levels may increase irritation, especially on compromised skin; confirm biodegradability and aquatic toxicity if heavy use. The EU classifies Cyclopentane Carboxylic Acid as "permitted". Safety rating: GOOD.

Is Cyclopentane Carboxylic Acid allowed in the EU?

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

What does Cyclopentane Carboxylic Acid do in cosmetics?

Cyclopentane Carboxylic Acid functions as: Cleansing/surfactant (for sodium salt); parent acid is a small organic acid intermediate which can be neutralized in situ. It is classified as a cosmetic ingredient in our database. CAS number: Cyclopentanecarboxylic acid parent CAS; cosmetic references focus on sodium salt used as surfactant..

What is the Margin of Safety for Cyclopentane Carboxylic Acid?

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.

Compliance Tools

Check Cyclopentane Carboxylic Acid compliance across multiple jurisdictions:

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Ingredient Decoder
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82 Allergen Checker
Check for EU declarable fragrance allergens
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Substance Compliance
Check compliance across 55 jurisdictions
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MoS Calculator
Calculate Margin of Safety using SCCS methodology
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Heavy Metal Limits
Compare limits across jurisdictions

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