Amazing! I hate the feel of typical sunscreen and this product is fantastic. It's got a neutral low odour and goes on silky. It's not shiny and has no greasy feel. I wore this in the desert in Arizona and didn't get burnt! I'd buy again but likely would get 60 as 100 is a little overkill.
The smell is really good. Makes my hair shiny. I use as a leave in conditioner after I dry my hair. I don't know if it does anything for the colour...maybe slightly brings out brown highlights though shine.