I'm african american is there a possibility to get rid of dark circles on inner thighs due to legs stickin together for years and no air to breath for clothes ?

Hyperpigmentation: When darker skin gets irritated, increased pigmentation or darkening of the skin can occur. While there are over the counter preparations that state they can lighten the skin, most do not work. I would seek consultation with a board certified dermatologist who can suggest options for lightening the skin. It is possible though that you will be left with skin color irregularity.