Is Magic Sleek treatment formaldehyde free? Does the hair straightening treatment work as well as keratin and the Brazilian blow out?

Every time the hair is washed, it will dry perfectly straight and frizz-free without applying heat or brushes, and all without the use of formaldehydes or any harsh chemicals. Permanent hair straightening treatments are a form of chemical processing for your hair. Depending on what method of processing you use, hair that’s naturally curly or…