Connecticut Hairdresser Licensure Practice Exam 2025 - Free Hairdresser License Practice Questions and Study Guide

Ultraviolet (UV) rays have a significant impact on colored hair, primarily leading to fading and damage. When hair is colored, the dye molecules are deposited into the hair shaft, creating the desired hue. However, UV rays can break down these dye molecules over time, leading to a reduction in vibrancy and saturation of the color. Additionally, the exposure to UV radiation can weaken the hair structure, making it more prone to dryness, brittleness, and overall damage.

This process occurs because UV rays penetrate the outer layer of the hair and can cause chemical reactions that deteriorate both the hair's natural quality and the artificial color. As a result, hair that is frequently exposed to sunlight without protection may appear dull or washed out, which highlights the importance of using UV-protective products for maintaining the integrity and appearance of colored hair.