There are two types of sun radiation: UVA and UVB. (herbazest.com)
In addition, the skin, which also accumulates antioxidant substances, may profit from a sufficient antioxidative level, as damage induced by sun radiation in addition to skin aging is reduced.» (parsleyhealth.com)
Environment: «UV sun radiation damages the top layer of skin and disrupts the skin's ability to make its own natural moisturising factors,» says Dr Hunt. (womenshealthandfitness.com.au)