Effective Treatment for Dark Underarms?

I have bilateral under arm darkening and was wondering what treatments I could try.

My doctor feels that this is not acanthosis nigricans (has ruled out diabetes, PCOS and GI tumor) but thinks it is due to friction over the years.

I have tried Chemical peels briefly and Hydroquinone with no noticeable improvement.

Asked 32 months ago by SoBe123 in nyc, ny
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