I'm allergic to the normal deodorant, or anti-perspirant maybe due to the presence of aluminum / alcohol / fragrance. I don't know! But the problem is, after I got the rash, my skin darkened (Could be due to accumulation of melanin to 'protect' my skin ) and I'm very used to wearing sleeveless, now I can't cause the skin darkened

How do I get it to whiten? Please help!

Actually I have, I went to a pharmacist. She recommended a product. Didn't work.

Maybe I'll try lemon juice. Don't think I want to seek professional help yet, they're kinda pricey.
Thanks, I'll look up lemon!