How can overexposure to UV light during tanning be identified?

Overexposure to UV light during tanning can be identified primarily through the occurrence of sunburn or skin peeling. This is a physiological response of the skin to damage inflicted by ultraviolet radiation. When the skin is overexposed to UV rays, it can become red, inflamed, and painful, commonly referred to as sunburn. In severe cases, the skin may begin to peel as it goes through a healing process, shedding the damaged outer layer.

The other options do not accurately indicate overexposure to UV light. A change in hair color is unrelated, as hair is not affected by UV light in the same way that skin is. Feeling energized is often associated with various factors unrelated to UV exposure, and an increase in appetite does not have a connection to the effects of UV rays on the skin. Therefore, the occurrence of sunburn or skin peeling serves as a clear and direct signal that overexposure to UV light has occurred, making it the most reliable indicator.