Well, it hasn't seem to do anything to my tan, but it fairly minor, mostly I have freckles. You tan because of the pigment in your skin, I would not think you could brush that pigment away. I do not know how to make a tan last longer, only to get sun in the winter too. :) If you would like to increase your tan you might consider using coconut oil, it is very healthy and non-toxic and seems to protect from sunburn if applied often from the accounts I have read. Best of luck to you, Caitlin Lorraine