West Virginia Cosmetology Board Practice Exam 2025 – Complete Study Guide

The primary effect of UV rays on the skin is that they cause premature aging and increase the risk of skin cancer. This occurs due to the damage UV radiation inflicts on the skin's DNA and its ability to deplete collagen and elastin—the proteins that are essential for maintaining skin's structural integrity and elasticity. Over time, this damage manifests as wrinkles, fine lines, age spots, and a general loss of skin tone and texture. Additionally, prolonged exposure to UV rays can lead to skin conditions such as actinic keratosis and, more severely, skin cancers like melanoma, basal cell carcinoma, and squamous cell carcinoma.

In contrast to the other options, which suggest positive effects or benefits of UV exposure, the reality is that while some sun exposure contributes to vitamin D production, excessive and unchecked exposure significantly harms the skin. The notions of promoting an even skin tone, reducing signs of aging, and enhancing collagen production do not align with the established understanding of UV radiation's effects. Instead, the focus should be on protecting the skin from UV damage through means such as using sunscreen, wearing protective clothing, and seeking shade, especially during peak sunlight hours.