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ALCOHOL DENAT. SD ALCOHOL 37

62

Safety score · 0–100

Fine

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

Denatured ethyl alcohol with eucalyptol, thymol and menthol as denaturing agents; widely used as a solvent and astringent in cosmetic formulations with known drying effects.

SD Alcohol 37 (INCI: Alcohol Denat.) is ethyl alcohol rendered unpalatable by denaturation with eucalyptol, thymol and menthol, in accordance with US 27CFR21 regulations. In EU cosmetics, denatured alcohol falls under the Cosmetics Regulation 1223/2009 and must comply with the Alcohol Directive 2006/52/EC. The denaturing agents (eucalyptol, thymol, menthol) are used at concentrations that make the product undrinkable but are not harmful in topical cosmetic use. Alcohol itself can cause skin dryness and irritation in leave-on products at high concentrations.

Skin benefits

  • Effective solvent and astringent
  • Provides cooling sensation from menthol
  • Antimicrobial properties for preservation

Known concerns

  • Skin drying and barrier disruption from ethanol at high concentrations
  • Irritation on broken or compromised skin
  • Eucalyptol and menthol can act as fragrance allergens

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.