Sunscreen provides protection against both ultraviolet (UV) rays and blue light, which is a type of invisible ultraviolet light emitted by electronic devices such as laptops and mobile phones. Even when there is no direct sunlight, UV rays are still present in the form of a spectrum of light that can cause premature aging. These harmful rays can penetrate through clouds and window panes. Additionally, the high-energy visible light (HEV) or blue light emitted by phones and laptops can also contribute to premature aging, resulting in visible effects like wrinkles, photoaging, fine lines, and dark spots.
UVA and UVB rays, as well as blue light, have the ability to penetrate the outer layers of the skin. With prolonged exposure, these rays can reach the dermis, which is the middle layer of the skin, leading to the destruction of skin cells and causing damage to the overall appearance of the skin. Specifically, the ultraviolet rays can harm the elastin fibers in the skin, resulting in sagging and stretching of the skin, which reduces its elasticity and ability to recover from stretching. The damaged skin also takes longer to heal from injuries like bruises or tears due to the impact on the skin cells. While the visible effects of sun damage may not be immediate when you are young, they become apparent later in life. Both sun exposure and exposure to electronic devices accelerate the aging process and contribute to photodamage.
Considerations to remember when using sunscreen
Experts recommend applying sunscreen around 20-30 minutes prior to going outside or being exposed to the sun. This allows sufficient time for the skin to absorb the sunscreen and reduces the chances of sweating it off immediately. It is important to reapply sunscreen during the day, but it's essential not to overdo it. Ensure that you apply sunscreen to all exposed areas of the skin, including the ears, back, shoulders, arms, and legs. It is recommended to reapply sunscreen at least every 2-4 hours, or more frequently if you are sweating, engaging in physical activity, or swimming.