Dark hips result due to excessive sweating between the thighs and when the thighs rub against each other because of excessive weight.Perform simple floor exercises that work on reducing the thighs and use these home remedies to lighten the skin.Apply some yogurt paste mixed with freshly squeezed lime juice over the affected areas. Leave for at least thirty minutes and wash off with herbal soap.Another mixture is oatmeal and yogurt that will also help to bleach the skin.Powdered orange peels along with yogurt also provide skin color change.Yogurt is a good natural bleach.Juice of raw potatoes and cucumber juice when applied will provide good results.