Med. Pro Praxi 2010; 7(6-7): 287-292

Reasons for the deterioration of organisms by sun radiation and fotoprotection necessity

MUDr. Milena Jirásková, CSc.1,, Ing. Lubor Jirásek, CSc.2

1Dermatovenerologická klinika 1. LF UK a VFN a IPVZ Praha

2FEL ČVUT Praha

Atmospheric changes associated with increased penetration of harmful UV radiation require better skin protection with clothing and

cosmetics produced especially for this purpose. UV filters should optimally protect skin in ratio 1:1 (UVB:UVA). They should be applied

on exposed areas 30 minutes before sun exposure and during the day the application should be repeated multiple times. Essentially

we should not expose ourselves to sunshine between 10 am and 3 pm and children under 3 years of age should not be exposed at all.

The quality and principles of protection are regulated by European institution COLIPA. Recently a great attention is paid to so called

bioprotection and quality of so called critical wave length λc.

Keywords: UV filters, photoprotection, bioprotection, critical wave length λc, UV index

Published: September 1, 2010  Show citation