In the UAE, avoiding long hours outdoors does not necessarily mean avoiding the sun. Exposure can happen during an everyday commute, while driving to work, walking to a parked car, or sitting beside a window at home or in the office.According to expert, these moments may last only a few minutes, but when repeated every day, the exposure can accumulate over months and years. “A lot of people don't know that the UV light, especially the UVA, crosses through the window panes and is still causing pigmentation and ageing,” Dr Amanjot Arora Khokhar, a UAE-based dermatologist specializing in clinical and aesthetic dermatology, said.The distinction between UVA and UVB is particularly relevant for commuters. While UVB is largely blocked by windows, UVA can still pass.