I am constantly asked to weigh in on the Brazilian Keratin Mania that has swept the hair care nation. I am a libertarian when it comes to hair care. If it works for you then do it! Salon-based keratin treatments must be entered into with caution however. Many of these treatments contain the carcinogen formaldahyde. This is being breathed into the lungs during the process and is being heat-adhered to the hair. A hot blow dry and 450 degree flat iron are requirements - it cannot be done without them - so if heat damage is not your thing think twice. Additionally the base polymers used to bond the keratin to the hair are actually plastics so strands are subject to dehydration as moisture and nutrients cannot penetrate to the cortex while these substances are bonded to the hair. This is why it has to be done over and over again to get that just-stepped-out-of-the-salon effect. Many Youtubers who have had it done end up doing a negative update video a month or two after the treatment. One diva raved about it in a video then in her very next video was in box braids. Not so much? Home kits are a much safer way to go. Brands like Liquid Keratin and Organix don't contain formaldahyde and don't bond to the hair for as long. As with any new process du jour do your homework and know your stuff when entering the world of Brazilian keratin.