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Denatured Alcohol

Alcohol Denat. · SD Alcohol 40-B · Alcohol

Solvent and quick-evaporating carrier in many serums. Drying potential when high on the INCI list.

What it does

Denatured alcohol dissolves actives, helps formulas feel light and fast-absorbing, and improves penetration of certain ingredients. At low percentages it is well-tolerated. When listed in the first three INCI positions — typical of toners and gel serums marketed as 'oil-free' — repeated daily use can dry the skin and disrupt the barrier, especially in already-sensitive or compromised skin. Look for it lower on the list, or for formulas that use glycerin or propanediol as the carrier instead.

Also known as

alcohol denat, SD alcohol, ethanol

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