Solvent
SD ALCOHOL 39
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
Specially denatured ethanol (SDA 39) — ethyl alcohol denatured with sodium salicylate, quassin and t-butyl alcohol. A common solvent and astringent. Generally safe in rinse-off and low-percent leave-on, but drying on sensitive skin.
Function
Skin benefits
- Effective solvent for actives
- Quick-drying astringent
- Delivery-system penetration aid
- Antimicrobial at higher %
Known concerns
- Skin drying and barrier disruption
- Salicylate denaturant sensitisation risk
- Quassin trace bitterness
- Sensitive-skin irritation
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related solvents
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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.