SD Alcohol Worst Irritant No known benefits SD Alcohol at a glance Is a volatile alcohol, also known as specially denatured alcohol Can cause skin dryness and potential barrier disruption Most commonly functions as a solvent in cosmetic formulas Also has anti-foaming and astringent properties SD Alcohol description SD alcohol is a type of denatured alcohol used as a solvent. It can be drying and sensitising to skin when one of the main ingredients in the formula. Related ingredients: Denatured Alcohol Alcohol