Řada studií se dnes pokouší odhalit mechanismy poškození UV zářením v jednotlivých vrstvách lidské kůže včetně stárnutí, imunosuprese, fotodermatóz, pigmentace, rakoviny Vzestup výskytu kožních nádorů je odrazem změn stylu života. Sluneční filtry by měly být součástí denní péče o pleí Aby splňovaly svoji funkci, musí chránit důkladně před UVA a UVB zářením, být samy vysoce bezpečné, mít takovou strukturu, která umožňuje použít je u kohokoli a kdekoli. Ochraně pomáhá i hlášení stavu ozónové vrstvy s UV indexem ve sdělovacích prostředcích.

The increase of protection efficacy of sunscreens against UVA and UVB is generally achieved by formulating large amounts of chemical absorbers and/or physical scattering agents. Using a large quantity of chemical absorbers for sunscreens, however, is known to reduce the safety to the skin. Likewise, the presence of a large quantity of scattering agents in sunscreens is responsible for a pale look when they are applied to the skin, discouraging men and children to use these types of sunscreens. Technological development of new chemical absorbents, which are safe even when they are added in large quantitles, and new sunscreen formulas which contain only physical scattering agents without chemical absorbents. Efforts directed toward the improvement in texture have been made in order to develop new powders by adjusting the optimum particle size and shape of the titanium dioxide or zinc oxide etc., and also to develope new hybrid powders and new formulating techniques. These technological developments have been accelerated by the standardized evaluation method for the UVA and UVB protection efficacy of sunscreens and also the standardized labelling system in the industry which has been established or which is being established.

Kožní klinika 1 LF UK a VFN Praha

Dermatology view to UV sunscreens

Problematika slunečních filtrů z pohledu dermatologie = Dermatology view to UV sunscreens /

Dermatology view to UV sunscreens /

Lit: 30

Souhrn: eng