for example, in 1882, the german dermatologist pal gerzon unna first used trichloroacetic acid.r words, tesapilling is well known these days. at the same time, the very definition of peeling appeared, which meant removing, cleaning. but still. even then, many peels were toxic and available not everyone. only in the second half of the 20th century in western countries did this procedure begin to become popular. in 1974 , dr. eugene van scott discovered alpha hydroxy acid, better known as ah acid. and professor albert kligman conducted a study on the properties of vitamin a for the skin. and 10 years later, an american dermatologist. abaji improved the peeling technique that he described in his book. so the procedure turned into a safe, if done in the doctor’s office, and an effective technique. and now i propose to understand, of course, from a scientific point of view, the very mechanism of the procedure, how peelings affect the skin and why after them. we get velvet skin, my colleagues have already talked with chemists and are ready to share interesting facts. peelings are basi