At the time that I used Malibu C Miracle Repair, I was platinum blonde and needed something to strengthen my hair and help with any roughness I had just prior to lightening. I applied Miracle Repair to my hair in the shower and left it on for about 15 minutes. Boy, did I feel and see the difference when I got out and styled my hair. I have also used Malibu C Rehabilit8 and that is honestly such an unbelievable product! I didn't think my hair was going to feel any better ever, until I maybe cut it off. Rehabilit8 is literally a life saver, especially since I do occasionally like to use my hot tools.