Theres not much awareness about skincare where i live, so i never really used sunscreen or anything, however i noticed just how different the shade of my skin is on my hands and neck and i was wondering if this is standard tanning, however some ppl said that it may be uv damage and irreversible. And if this is a tan, is this reversible or harmful in any way, I have been exfoliating and my skin seems to have gotten somewhat lighter