I have been using Sun-In for years. It's the only thing I use in the summer months to get that sunkissed look! It's fabulous. It really does the job. I have a mousy light brown, dirty blond color. And it looks so blah after not getting out in the sun during the winter. So, first time spring starts coming, I order a bunch from Amazon. I use it all summer long, so I just get it in bulk. It works okay with the hair dryer, but it REALLY works with the natural sun! I don't want to use anything too harsh on my hair since it can get kind of brittle and frizzy. But, Sun-in leaves my hair nice and soft after using. Things to be careful about. When you wash your hair after using, make sure not to get in your eyes. If you get it on your hands from spraying it in, wash them too, or they'll start to feel pruny. And, watch out for your pillow case. I bleached out my moms once by accident. I'd washed my hair, but it was still damp, and managed to bleach her pillow case!