First of all I have been through almost every leave in heat defense spray, leave in conditioner etc. At first this didn't work even though it smelled magnificent. What i was doing was blowing drying my hair before and while my hair was dry i put this on, than tried to straighten my hair WRONG!! It was hard, rough and terrible.So, make sure after you towel dry, not totally dry, your hair you start to put a dime size in your palm and do one side of your hair and another dime size for the other side. If your hair is shoulder length a dime size only for your whole head. Make sure you do your whole hair starting from the bottom up. Section your hair, starting from the bottom, and straighten and work your way up. I end up, after im done, washing my hands and drying them. Adding just a dime size of your favorite smoothing serum starting from the bottom up. And watch the compliments come in.