Sunless tanning & indoor tanning experts only please i have a dilemma!?

First off my skin type is III-IV (3-4) so i tan pretty easily but am still susceptible to burning if over exposed to UV light. So i have been indoor tanning for about half a month now and its going pretty good i am getting very dark and am tanning for about 17 minutes in a lay-down deluxe bed with three facial tanners. The lotion i'm using is one called Hawaiian Beach Premium Tanning Accelerator= Basic. My dilemma is that while using the lay-down bed i have aculated a white spot just above my bum area lol about the circular size of putting your index finger to your thumb and a tan line under each cheek this is all because i didnt relize my skin was folding over these spot while i was tanning how embarring! SO im looking for a SUNLESS TANNER that i could use only in these spots that would go good with my skin type and not make it look like i have three orange spots because i tan pretty brown not orange. AND one more questing can you even just use sunless tanner in spots here and there or will it come out funny. SORRY FOR THE LONG PARAGRAPH =) HOPE SOMEONE CAN HELP!