Sunlight Can Reduce Risk of Allergies In addition, the sunshine vitamin that is produced in the skin and is essential for healthy bones and muscles. Professor John Hawk, skin health expert, recommends you to the sun, especially in the morning because it is more healthful. He added, "the sun can protect us from skin diseases, including allergic reactions such as prickly heat, psoriasis, and skin allergies to cosmetics". "There's some new evidence that shows the sun can increase the body's immune system to fight bacterial infections," he added. You just exposed to sunlight for five to 30 minutes each day to give vitamin D it needs. But it should be noted, exposure to sunlight for too long may increase the risk of skin cancer. Similarly, the 'tanning' or bask in the sun in order to brown the skin it is very dangerous. Sun would lead to excessive risk of skin aging and cancer.