UVA rays are what wavelength range?

UVA rays are understood to occupy the wavelength range of 320-400 nm. This classification is essential in the study of photobiology and dermatology, particularly in relation to skin exposure to ultraviolet radiation. UVA rays penetrate the skin more deeply than UVB rays and play a significant role in skin aging and the development of skin cancers over time.

Understanding the wavelength range is crucial for professionals in fields related to skin treatment and protection. UVA rays can cause oxidative stress in skin cells, leading to premature aging, and they contribute to the risk of skin cancer by damaging the DNA within those cells. Recognizing the correct range helps practitioners understand the potential effects of sun exposure and the importance of implementing protective measures, such as using broad-spectrum sunscreens that guard against both UVA and UVB radiation. This knowledge is integral for anyone working in electrology, laser treatments, and other skin-related therapies.