Science
Mechanism of Action
It efficiently dissolves oil-based ingredients, enhances active substance absorption, and rapidly evaporates. It also acts as an astringent, antimicrobial agent, and reduces viscosity.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Cosmetic Ingredient Review (CIR) Expert Panel safety assessment
- 02 CIR Expert Panel animal studies on non-irritancy at 12%
Transparency
Dusting Analysis
Despite its beneficial formulation properties, high concentrations of SD Alcohol 23-A can lead to drying, irritation, and compromise the skin's barrier over time.
The Formula
Formulation
Stability
Ethanol, the base of denatured alcohol, is a clear, colorless liquid that evaporates rapidly and mixes well with water. It is a capable solvent for both water-insoluble and oil-based substances.
Conflicts
- High concentrations are incompatible with sensitive or dry skin, potentially causing irritation, dryness, and a compromised skin barrier.
- Can strip natural oils, damage the skin's surface, and may increase penetration of hazardous substances.
Safety
Safety Profile
The CIR Expert Panel found denatured alcohol (including SD Alcohol 23-A) safe between 0.05-12% when denatured with specific agents. SD Alcohol 23-A uses acetone as a denaturant. Safety remains controversial at high concentrations due to potential drying and irritating effects.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Despite its functional benefits as a solvent and penetration enhancer, its high irritancy and potential for drying and barrier damage, especially at higher concentrations, render it largely unsuitable for skin health-focused formulations.
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