Sunbathe safely, a challenge when choosing a sunscreen or sun block. A sunscreen for every skin
Sunlight is composed of various types of electromagnetic radiation: X-rays, Gamma, UVC (very dangerous but not penetrate the ozone layer) and reach us: UV, the visible and infrared radiation. Those of us interested in its biological effects on the skin are UV rays, which are subdivided into UVB and UVA short and long UVA. Sabema ultraviolet light affects our skin on the outside during a normal day, and even within, in all seasons, not of the same composition or the UV intensity of direct summer sun. It is relatively richer in ultraviolet A.
UVA And UVB
Let’s look in more detail in relation to solar radiation in general. What happens, depending on the date and latitude when the sun is at its zenith, but declines on the horizon, as the day progresses? It is noted that the overall total radiation decreases to disappear at the time of sunset. But just as quickly descended UVB rays, the They do so UVA radiation UVA radiation on the set overall, remains virtually unchanged throughout the year. Therefore, the ratio UVA / UVB increases beyond the values mentioned above.
During a working meeting of experts on sun protection, commented upon the trends of the market for solar products, especially those of individual protection. There were different positions, but not contradictory, since we have seen in recent years came on the market as special products and how many new segments appear in the same, so we’re practically giving each person an individualized protection. The specialization affects more particularly to certain consumer groups (children, people allergic and hypersensitive), some consumption situations (beach, sports, skiing) to certain body areas (face, lips, rest of body) and additions to some functions (self-tanners, insect repellents, makeup, after-sun care, hair protection, treatments for after the solarium).
To this we must add the various types of products (milks, creams, balms, sprays, gels, foams, oils, lotions, pressed powders) and the numerous factors offered protection (2 to 60). Then there is the copious use of sunscreen spray, very well accepted by consumers, with ingredients that extend well into the skin, not greasy film and have produced excellent penetration. Sprays represent a further step towards protecting individual and an extensive range of solar products.
Sun protection factor (SPF)
The career of protective factors appears to have extraordinarily high finish in 2000. In 1998 appeared a product on the Japanese market with a PF of 123 and in 1999 left one with a FP 130, which may lead to think that protective factors have peaked. To end this climbing, the cosmetics industry has decided not exceed a maximum of 50 + FP. That means that although the actual protection factor of the product is high, it shows up “FP 50”.
Only the indication given to understand that this factor is higher. These rules are in force in Australia since 1997, where the maximum protection factor can be identified on a product is 30 or 30 +. In the United in May 1999 published a monograph on sunscreen (Sunscreen Drug Products For Over The Counter Use, Final Monogragh) and the Office of Health and Public Hygiene (FDA) in this country has set a protective factor that can be provided in a product at 30 +.
It also explains the reasons for this rule: in practice, the factors above 30 can not really offer more protection. However, currently seen with FP products over 30 + have gained considerable importance in the market, the cosmetics industry protest against these regulations. Meanwhile, the entry into force of the monograph has been postponed until 31 December 2002. To date may manufacture products with protection factors over 30 and show their interest by consumers. Depending on the outcome of investigations, the monograph is likely to be changed again. The solution, as in Japan, a factor of up to 50 + has not been ruled out.
So far, in Europe we have had no regulations or recommendations regarding the very high protection factors circulating in the market, so it is possible that the escalation of the FP be prolonged indefinitely. He arrived in Germany to sell products are protection factor 60 +! We’ll see what solar will reach heights of the “assailants summit” this summer …. “After bathing in the sea or the pool, sunscreen-even waterproof – lose up to 50% protective efficacy”