Hello doctor. I have a problem of hyperpigmentation on my inner and outer thigh and bellow my butt chicks. It started when I went to a well known dermatologist in New York for Laser for stretch marks( Fractional CO2). After a month of that $2500 worth of laser,I was left with these darks marks. I went back to my dermatologist about this issue,and she just told me to use bleaching cream,which never works,it been a year and half now but I m still stuck with this mess. What should I do to get rid of these huge dark marks on thighs? Sincerely- Angel.