Is the sun making the skin age faster?UV Rays are responsible for 90% of the physical signs of aging. The skin of the first person will indeed age faster.
There are a few caveats to that answer. While both UVA and UVB rays contribute to the aging process, UVA is the bigger culprit. UVA rays, unlike UVB rays, can penetrate clouds and windows. If we have a scenario where the second person who works inside 12 hours a day sits next to a window not treated for UV protection, the first person will likely still look older, but the difference can be smaller.
Source: Everything you should know about Sunscreen