How much can a sunblock protect our skin from UVA/UVB rays?
Sunblock protects skin in two main ways. It acts as a physical sunblock which blocks the sun rays from reaching the skin or as a chemical sunblock which absorbs the harmful sun rays to prevent skin ageing and skin cancer. How does one know if the skin is exposed to UV rays? There are immediate effects such as redness, discomfort and peeling if it’s sunburnt. Longer term effects include darkening of skin, roughness and coarseness of skin, wrinkles and development of pigmentation and in some individuals, skin cancer. Are there different damages caused by different UV rays? UVA rays penetrate deeper into our skin than UVB rays throughout the day. UVB rays on the other hand affect outer layers of the skin epidermis, which is responsible for sunburn, erythema (redness) and wrinkles. Is skin only damaged through direct contact with sun rays? The most intense sun rays are between 10am and 3 pm and in hotter months the rays are more intense. UVA rays can penetrate windows, so you are exposed e
