Beyond the obvious benefit of helping to prevent sunburn, sunscreens also help prevent damage from UVA and UVB rays which can cause damage and early signs aging. In addition to dark spots and dullness, damage from the sun can also cause rough texture, fine lines and wrinkles. In fact, 80% of skin aging is due to external aggressors like the sun.i
iTobin, Desmond J. “Introduction to skin aging.” Journal of Tissue Viability. 26.1 (2017): 37-46.