Salem 21 has been scientifically developed to add gloss and life to damaged, treated, porous or dry hair. It also protects hair from harmful elements such as sunlight, heat chlorine, saltwater, etc. The silk proteins of Salem 21 repair hair deeply because, due to their small size, reach the core. Pro-vitamin B5 gives you the natural shine of healthy, looked-after hair and is now incorporated in liposomes; making it 10 times more effective.