Hello, Thanks for posting your query. Dark skin on inner thighs could be as a sequel to a fungal infection. It could also be due to other reasons like friction, allergy etc. The following measures would be helpful: Keep the area dry and clean. Wear cotton clothes. Apply Vitamin E cream like Sofderm or Hovite AO thrice daily on the affected areas. Diet and exercise if you are overweight, and this is causing friction between the thighs. Home remedies like applying cocoa butter sometimes helps. Regards,