How can we remove blackness from private parts

Make a thick paste of gram flour and water. Apply this mixture on the affected area and let it dry. Wash it off with lukewarm water and repeat this process 2-3 times a week for best results.

Friction and inflammation contribute to the darkening of the intimate area, and those issues come from many sources. Underwear that doesn't fit well, exercise, walking, and sex all cause friction. Anywhere that skin rubs against something else is likely to experience hyperpigmentation.