Sunlight helps skin synthesize vitamin D, which is critical for the absorption of calcium and phosphorous as well as for regulating calcium metabolism in the bone. But unprotected exposure to the sun’s ultraviolet (UV) rays can cause damage to the skin, eyes, and immune system. It makes skin sallow and mottled with brown and white spots, and causing wrinkles. It can also cause cancer. With using suitable and effective sunscreens, you can enjoy the benefits of these unique rays.