Thanks for the query. This is a unrealistic expectation. I do not know of any magical treatment that will change the colour of your skin. ​​​Outdoor activities make the visible part of our skin tan. The only option is to wear protective full sleeves clothing, cap or a hat, to carry an umbrella and sunglasses. Skin already tanned can be treated with depigmenting creams. A good skin care regimen comprises 4 steps - cleansing, toning, moisturizing and sunblock.