What is a Sunscreen?
Sunscreen is a topical (to apply on the skin) product that protects the skin against harmful effects of the sun.
How Can the Sun be Dangerous?
The sun, besides emitting visible sunlight, also emits non-visible ultraviolet (UV) rays.
UV-B rays may cause sunburns and skin cancer (through a damage of DNA in the skin cells). New studies suggest that UV-A rays may also cause skin cancer (1). UV-A exposure may result in photo-aging: skin wrinkling, age spots (hyper-pigmentation), freckling, visible capillaries, and lost of skin elasticity (through the breakdown of connective tissue in the skin) (2).
continue reading What Is a Good Sunscreen – Sunscreens Products, Sunscreen Facts
