What is one of the chemical effects produced by ultraviolet rays?

One of the chemical effects produced by ultraviolet rays is the ability to kill germs. Ultraviolet (UV) light has antimicrobial properties that can effectively destroy bacteria and viruses. This is particularly relevant in various skincare treatments and environments where maintaining a sanitized workspace is crucial. The specific wavelengths of UV light, particularly UV-C, are known to disrupt the DNA of microorganisms, rendering them inactive or dead, which is why UV light is sometimes used in sterilization processes for tools and equipment in esthetic practices.

While options like enhancing collagen production and darkening skin pigmentation are also related to UV exposure—collagen production does increase with UV exposure to an extent, while skin pigmentation darkens due to melanin production—the direct germicidal effect is a more pronounced chemical effect attributed to ultraviolet rays. Increasing moisture levels does not directly correlate with UV exposure effects, making it unrelated in this context.