How can I get rid of hyperpigmentation in my bikini area (caused by laser hair removal)? (would glutathione help)?

Hello, i've had laser hair removal (4 sessions). The first two went well and my skin was white/clear. However, after the 3rd session i noticed that the hair wasn't even falling out and the area was getting darker. My bikini area has a tanned like and blotchy appearance. I've been using whitening creams( they arentworking),cortison creams and the lady that did my laser suggested that i do a chemical peel, but i follow her recc for obvious reasons. What can i do? Would going on glutathione help?

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