TopicWhat vitamin is good for collagen production?
Being exposed to sunlight does have health benefits. It can help regulate the production of melatonin, and we humans are are rather good at converting rays into vitamin D, a nutrient that a supermajority of Americans are deficient in, particularly those living in northern states. That said, ultraviolet (UV) rays break down skin fibers, which cause it to sag and lose elasticity (not to mention lead to melanoma). If you're going to be spending time outside, use a sunblock with an SPF of at least 30, and wear a hat with a brim that casts a shadow over your face.