태양이 피부에 닿으면

Abstract

Skin is the primary barrier that protects our body from various external factors. Sunlight is a representative environmental factor that greatly affects the physiological activities of our body, and for this, sunlight touches the skin. In fact, many studies have thoroughly investigated the harmful effects of ultraviolet (UV) on the skin and their mechanisms. Chronic exposure to UV commonly causes damage to the skin, eventually leading to wrinkle formation and loss of skin elasticity. Recently, it has been discovered that visible light of different wavelengths has various biological effects on the skin. In addition, recent studies have reported that photoreceptors are expressed not only in the eyes but also in the skin, and sunlight is emerging as a new topic for skin research. Since research on the visible light region of the skin is still in its infancy, research has been conducted with different equipment and methods for each study. Therefore, results that contradict existing results or are difficult to accept are reported. Ultimately, standardization of highly reproducible equipment, specifications, and methods for light research seems to be absolutely necessary for future.