Tanning became fashionable in the 20s and brought a touch of class to the beach wardrobe. About the same time was commercialized first sunscreen that protects skin from ultraviolet rays of the sun to green base nut shell. Since then, sunscreens are an essential weapon in the fight against skin cancer.
Fair skin, almost pale, were the beauty ideal in the past, when faces tanned by the sun were a stigma of lower social classes, working outdoors. But with the advent of the twentieth century and the Roaring 20, the tan became a hallmark of the bourgeois class, which provided leisure time to tan.
Since then, the Negro has been interpreted as a sign of good health and beauty. However, with progressive destruction of the ozone layer, which increases the virulence with which ultraviolet (UV) rays act on the skin, the message has changed dermatologists insist that the brown is the result of damage skin sufferer, when attacked by the UV and it is protected by producing more pigment or melanin.
The National Cancer Institute and warns U.S.: 90% of skin cancers, the most common in North America, occur in people exposed to the sun regularly. In this sense, the president of the American Academy of Dermatology, Darrell S. Rigel, states that “sunscreens are an essential weapon in the fight against skin cancer.
A study by the British Columbia Cancer Agency and the British Columbia University Among 458 children with fair skin, published in the prestigious medical journal JAMA, concluded that the use of high sun protection in this group did decrease the appearance of new moles in a period three years and therefore reduced the risk of skin cancer.