If you bleach your hair you need this. I forgot how well it worked & left this in my shower while I was away at college. I came home and sprayed it in not expecting much but it completely revitalized my hair. Spray it on after you shampoo, leave on for 5 mins, and follow up with a deep conditioner. My hair felt 50x thicker and stronger. I use heat on my hair everyday and bleach it but this made it feel like my old hair again. You need to use a good conditioner after though because it is drying but overall an amazing product!