What typically happens to hair color when exposed to sunlight?

Hair color is affected by sunlight primarily due to the ultraviolet (UV) radiation present in sunlight. When hair is exposed to UV rays, it can cause the pigments in the hair to break down, leading to fading or altering of the hair color. This is especially noticeable in colored hair, where the vibrancy of the shade can diminish over time.

In addition to color fading, UV exposure can also lead to changes in the overall appearance and health of the hair. The hair may become dry and brittle as the natural moisture is stripped away, further contributing to a lackluster appearance. This phenomenon underscores the importance of taking protective measures, such as using UV-protectant hair products or wearing hats when spending extended periods in direct sunlight, to help maintain hair color and integrity.