Challenge Your Exam Readiness With Our Free Esthetician Practice Questions

UVA rays penetrate deeply into the dermis, where they damage collagen and elastin fibers, accelerating photoaging. This results in wrinkles, sagging, and uneven texture. UVA also contributes to hyperpigmentation and skin cancers. UVB rays (choice B) primarily affect the epidermis, causing sunburn and playing a direct role in DNA damage leading to skin cancers. UVC (choice A) is mostly absorbed by the ozone layer and does not reach the Earth’s surface. Visible light (choice D) does not directly cause sunburn or aging to the extent of UV radiation. For estheticians, knowledge of UVA’s role is essential for client education on photoprotection. Daily use of broad-spectrum sunscreen that blocks both UVA and UVB is critical for skin health and anti-aging. UVA penetrates through clouds and glass, meaning protection is necessary year-round, indoors and outdoors. This understanding supports product recommendations, treatment planning, and prevention strategies in professional skin care practice.