Arkansas Cosmetology Practice Exam 2025 – Complete All-in-One Guide to Exam Success!

The main effect of UV light on hair color is that it can cause color to fade. This deterioration occurs because ultraviolet rays penetrate the hair shaft, leading to a breakdown of the color molecules. Over time, exposure to sunlight and UV radiation can lighten dyed hair and diminish its vibrancy, resulting in a washed-out appearance.

Natural hair color can also lighten when exposed to UV light, as the sun's rays can break down melanin, the pigment responsible for hair color. By understanding this effect, cosmetologists can make informed decisions when advising clients on hair care products, treatments, and the importance of UV protection for maintaining color-treated hair.

Enhancement of color vibrancy or making hair color darker are not typically associated with UV exposure; instead, the light generally has a diminishing effect on color. Changing hair texture is also not a direct result of UV light exposure, as that is influenced by other factors like chemical treatments or physiological changes.