Hello,
There can be many reasons behind dark underarms skin. You need to find the reason, to get best solution. Common reasons are:
1. weight gain that cause increased friction.
2.repeated shaving and waxing
3.usage of deodrants or perfumes
4.insulin resistance (weight gain, neck pigmentation).
It would be better to consult a dermatologist in person .
Answered2016-07-25 08:16:43
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