We Indians are more popular for our dusky look that is considered to be the most appealing for everyone. But, how about sun tan, black patches or dark skin color? And especially when you find that those skin color are not your actual color, will you be able to accept it? Obviously not. The reason for dark skin is sun tan. Long exposure under the harmful radiation of sun results in the production of melatonin in heavy amount. This results in the darkening of your color complexion. Sun tan majorly affects the open areas like face, neck, arms and legs. Major problem that can be caused due to sun tan are acne, dark spots, wrinkles and premature aging of skin.