Dear Dr ..              I am a 52 years  old woman with olive skin tone and i ve two kids ... I v hyper pigmentation in underarm folds ,back of my neck and elbows all my life ... i ve used every lightening and bleaching product in the market or in spas ..i ve achieved some improvement (60%) but they have never been vanished ... it is a long battel with hyperpigmentation .. Can this symptom be insluin resistance and i had never been diagnosed properly ? i want to get rid of this pigmentation , very embarassing and annoying ... by the way i m not obese  and i had always  heavy regular periods .. Any advice ???
First u SHD know that this area have more pigmentation as compare to rest of body. If you are not diabetic n obese don't worry n don't pay attention on it. Still u want to concern than apply combination of retinoid, comic acid, albumin n it c at bedtime.