self tanners and 'rough' spots

hey guys, i was wondering if anybody could help me out with a problem i'm having.  i like to use st. tropez self tanner i love the color and it works well for me.  the problem is i have these areas such as inbetween my boobs usually where the bra sits that are kinda 'rough' skin and the tanner shows up darker there.  i also find that after reapplying the tanner after like a week the skin around my arm area tends to 'build' up more and looks a lot darker.  has anyone else had these problems or knows how to adress them? 

I agree with babycheeks....exfoliate, exfoliate, exfoliate! You can pick up an exfoliating cream or even a body wash that contains exfoliating beads at the drug store. I use self tanner in the summertime and I find that exfoliating beforehand really helps with creating an even application.