An effective way to remove sun tan is by mixing bengal gram flour or besan with a teaspoon of turmeric and make a thick paste by adding milk or rose water. Apply it all over your tanned skin just before bathing. Once it dries up, remove it with plain water. Doing so regularly will help in removing tan and also keep your skin supple and smooth. Milk is better for getting a fairer skin tone than rose water. If your skin is dry or during winters, you can use milk cream also. Its the cheapest and easiest home remedy as all the ingredients are commonly found in the kitchen.

There are many homemade detanning methods available. You may apply a combination of curd/yogurt, turmeric and cucumber regularly on the affected areas and hope that you would get relief.