UV light causes chemical reactions to happen more quickly than visible light, and:

UV light indeed promotes certain chemical reactions more rapidly than visible light, and one of its significant benefits is its ability to kill some germs. This property is utilized in various applications, such as in sanitization processes where UV light is exposed to surfaces and water to eliminate harmful microorganisms. This germicidal effect is largely due to the DNA-damaging capabilities of UV radiation, which disrupts the cellular functions of pathogens.

In the context of the other choices, while it's true that UV light can contribute to skin cancer and worsen hair damage due to its high energy, these aspects pertain more to the negative implications of UV exposure rather than its beneficial uses. Enhancing colors is generally associated with visible light rather than UV, which is why those options don't highlight the advantageous aspects of UV light like germicidal effects do.