Hi all. I work outside in Florida and have to wear a white shirt as my uniform. Consequently, I have ended up with a crew neck line, bra lines, half arm tan on both arms, and a serious "red neck," for lack of a better word. I added a picture to help.

I am not sure regular tanning is going to fix my problem areas without making the rest of me darker, too. And I worried about spray tan because it may rub off on the dress. Does anyone have any advice?
I can't NOT be in the sun and I do wear sunscreen.
Any advice is tremendously appreciated.