I never would have tried this had it not come in my box...I was a little skeptical at first thinking it would weight my hair down or make it greasy. (My hair is long and fine.) I put a little bit of the prime in my hair before drying it. It noticed it was a little harder than normal to pull the brush through my hair with this in it. Once I was done drying my hair was definitely smoother than normal, and wherever I brushed the hair, it just sort of stayed that way, much better than it normally would. Then when I woke up the next day, my blowout was about 90% intact, and it typically never lasts more than a single day. I am amazed to say, this stuff works. I love it!