The inner thighs, groins, genitals are prone to friction and sweat and hence are darker than rest of the body. Sometimes fungal infection
, excess weight and disease like acanthosis nigricans
can lead to increased pigmentation. You may use a mild pigmentation reducing creams containing Kojic acid
, arbutin and vitamin c
to reduce darkness of these areas. You may also continue with your home reedy as long as ts not causing any redness or irritation over affected area.
Hope that helps. Take care