PHOTOPROTECTION IN THE INFRARED RADIATION RANGE

The solar spectrum reaching the earth contains a portion of wavelength s corresponding to the infrared range. Along with ultraviolet radiatio n, infrared radiation contributes to the biological effects of sunligh t on the skin. In recent years several sunscreens have appeared that c laim to protect against infrared radiation. We have evaluated the imme diate erythema induced by infrared radiation, and the protection offer ed by such sunscreen. We found it offered a minimal but real protectiv e effect against infrared-induced erythema.