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ETHYL 3-HYDROXYBUTYRATE.

Insufficient Data CAS 5405-41-4 / PERFUMING

Ethyl 3-hydroxybutyrate is a fatty acid ethyl ester derived from 3-hydroxybutyric acid, functioning as a metabolite and ketone body analog. In skincare, it is recognized for its moisturizing capabilities, contributing to improved skin hydration and elasticity.

Metabolite Humectant Skin-Conditioning Agent Fragrance Ingredient

Science

This compound acts as a precursor, metabolizing into 3-hydroxybutyrate (3-HB) within the skin. 3-HB is a critical metabolite that supports the TCA cycle, reduces protein degradation, stimulates protein synthesis, and helps maintain metabolic homeostasis. These actions collectively enhance antioxidant defenses, reduce inflammation, and promote skin barrier health. It is also recognized as a beta hydroxy acid derivative.


Research

Low confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

The Formula

Solubility
Water
Optimal pH N/A
0 7 14

Conflicts

  • strong oxidizing agents
  • strong bases

Safety

CIR Status
Not reviewed
Sensitization risk Moderate

While recognized as Generally Recognized As Safe (GRAS) for food use by FEMA and classified as a 'Safer Chemical' of 'low concern' by the EPA, there are currently no specific Cosmetic Ingredient Review (CIR) or SCCS assessments for cosmetic application. General warnings, particularly GHS classifications for its (3R)-enantiomer, indicate a potential to cause skin and serious eye irritation.


Your Skin

No Normal
Yes Dry
No Oily
No Sensitive
Irritancy Moderate
Comedogenicity Unknown

Our Assessment

Insufficient Data

Despite promising mechanistic benefits related to metabolic health and moisturizing properties, comprehensive cosmetic-specific safety and efficacy data, including clinical studies and CIR review, are currently insufficient to fully determine its potential as a primary skincare ingredient.


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