Kolonya is a type of perfume. Kolonya is commonly used as a cologne, perfume, or hand sanitizer. It can sometimes be used as a surrogate alcohol by poor alcoholics and teenagers, usually resulting in fatal poisonings or blindness. As a result of this, the Turkish Food Safety Ministry has required adding a bittering agent, since 2018, to reduce the likelihood of people ingesting the liquid. Cheap Kolonya can contain methyl alcohol which is absorbable by skin, causing Methanol toxicity. Higher quality Kolonya is denatured with isopropyl alcohol instead of methanol.