Esthetician Shares: What Alcohols Are worse than Better For Your Skin? Unsafe Alcohols for Skin The unsafe alcohols in some skin care products are generally simple or denatured alcohols, which are created using petroleum-based ingredients. In other words, not really something you want on your skin or in your bloodstream. These not-so-skin-friendly alcohols include ethanol, isopropyl alcohol, and alcohol denat.…