Stearoyl Leucine
A cosmetic ingredient used as hair conditioning, skin conditioning, surfactant - cleansing in skincare, haircare, and personal-care products sold in the European Union.
What is it?
L-Leucine, N-(1-oxooctadecyl)-
What does it do?
Stearoyl Leucine is listed in the EU cosmetic ingredient inventory with the following declared functions:
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Hair conditioning
improves the appearance, feel, and manageability of hair
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Skin conditioning
improves the appearance, feel, and condition of skin
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Surfactant - cleansing
surfactant whose primary cosmetic role is cleansing — the active workhorse in soaps, shampoos, and body washes
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Surfactant - emulsifying
surfactant that forms and stabilises emulsions of oil and water — without it, creams and lotions would separate
EU regulatory status
Stearoyl Leucine is allowed for use in cosmetic products in the European Union under Regulation 1223/2009. It is not subject to a specific Annex restriction at the time of writing.
Frequently asked questions
What is Stearoyl Leucine?
Stearoyl Leucine is a cosmetic ingredient catalogued in the EU CosIng database. L-Leucine, N-(1-oxooctadecyl)-
Is Stearoyl Leucine allowed in cosmetics in the EU?
Yes. Stearoyl Leucine is allowed for use in cosmetic products in the EU under Regulation 1223/2009.
What does Stearoyl Leucine do in cosmetic products?
Stearoyl Leucine is declared in the EU cosmetic ingredient inventory with these functions: hair conditioning, skin conditioning, surfactant - cleansing, surfactant - emulsifying.
What is the CAS number of Stearoyl Leucine?
The CAS (Chemical Abstracts Service) number for Stearoyl Leucine is 14379-43-2.
Related ingredients
Source: EU CosIng database (European Commission). This page is derived from public-sector information published by the European Commission. · Last updated: 15/10/2010