UV COSMETICS/SUNBLOCK/SUN CREAM, SUNSCREEN, UV ABSORBER

Sunscreen cosmetics, known by various names such as sunblock, sun cream, and suntan lotion, come in various forms such as lotion, jelly, and spray. They help prevent skin aging from UV rays by absorbing or reflecting the sun's ultraviolet rays. Continued exposure to UV rays can cause skin wrinkles, dark spots and sagging skin.

UV protection can be classified into physical blocking (reflecting ultraviolet rays) and chemical blocking (absorbing ultraviolet rays by UV absorber).

The effectiveness of sunscreen is mostly expressed by the “SPF (Sun Protection Factor) index.” This is a method of measuring the rate at which UV rays penetrate into the skin after applying a certain amount of sunscreen (2mg/cm2). “SPF 15” is 1/ of the total amount of UV rays. 15 (the reciprocal of the SPF index) may penetrate the skin and cause skin damage. In other words, 14/15 UV rays are absorbed or reflected by sunscreen and do not affect our skin.

Therefore, the higher the SPF index, the higher the blocking effect, but the U.S. Food and Drug Administration (FDA) suggests that the maximum “SPF index” is “SPF 50,” which actually provides the maximum effect.

Please note that a higher SPF does not mean that the effect lasts longer than a lower SPF, so repeated applications are required as recommended, generally recommended every two hours.

PA systems used in Asia, including Korea and Japan, are simply divided into four types: PA+, PA++, PA+++, and PA++++. The higher the + number, the higher the UV protection effect. In the case of PA++++ products, the amount of UV irradiation that theoretically causes skin damage after application is reduced. It is said that it can protect the skin even when exposed to environmental factors up to 16 times higher.