How can I lighten my underarms and bikini line after chemical burn from acids? Should I see a dermatologist? What do I ask for?

the gentials and other down under areas can get pigmented and we can treat this with skincare and aerolase.
this is post inflammatory hyperpigmentation/melasma/discoloration that needs cosmelan or enlighten peels at home which we can do virtually and send to your home along with aerify peels regularly, vivatia foam, restorsea 10x, faith essence serum, and cosmelan 2 cream. see emeragecosmetics.com where we do free skincare consults daily and can send you peels and skincare. proceeds go to help BLM and LGBTQ+ non for profit organizations.
Hyperpigmentation from any type needs a combination approach of peels like cosmelan, enlighten and aerify,  lasers like clear and brilliant and aerolase or laser genesis, radiofrequency like venus viva, and constant skin care and sun protection.  Bimonthly facials with silk peel dermalinfusion is essential to hydrate, exfoliate and infuse vitamins and antioxidants into the skin.  If you have acne you can do additional treatments and peels to get more improvement.  I suggest a formal consultation with an expert in lasers and peels. Best, Dr. Emer.

Hello, you can treat this with hydroquinone.  Hydroquinone is a lightening agent found in certain skin care products.  For best results go to a dermatologist who can prescribe you one that is strong enough to make a significant difference.  You may also want to consider getting laser hair removal so you don't have to worry about this happening again from waxing.  Good luck!