Sunscreen is essential even on rainy days.

UV rays that torment us 365 days a year

While ultraviolet rays have many benefits, from a purely cosmetic standpoint, they are an undesirable presence as they stimulate melanin cells to increase pigment production, leading to blemishes. Since they can cause not only hyperpigmentation such as melasma and freckles but also skin aging and even skin cancer, it is important for everyone, regardless of age or gender, to apply sunscreen.

Some people believe they are 100% safe from ultraviolet (UV) rays because they work indoors for long periods or stay indoors. However, surprisingly, about 80% of UV rays reach the Earth's surface not only on clear days but also in the shade or on cloudy days. They even penetrate almost all types of glass, such as car windows and house windows, while natural fibers like cotton only block about 70% of UV rays. Therefore, when the sun is strong, it is important to protect yourself from UV rays both outdoors and indoors.