I ordered these from Repare skin care but once I received the product, i realized I am chicken to do an at home facial peel. (I've never had one). Long and short is that's why I'm listing it. Active ingredient is Trichloroacetic acid. The instructions recommend doing a spot test first to make sure your skin can tolerate the peel. IMPORTANT: the directions say to apply RePare Chemical Peel Neutralizer after you do the peel. The neutralizer did not come with the skincare product so you would need to order it .