The Ultraviolet Protection Factor (UPF) is comparable to the sun protection factor of sunscreen (SPF). In both cases, the basis for calculations is what is known as the intrinsic protection time of the skin, which can vary considerably depending on the individual skin type.

YEAR THAT STARTED: 1998

FUN FACT: The skin of someone of skin type I with red or blond hair, blue eyes, and a very fair complexion has an intrinsic protection time of approximately five to ten minutes. If they are exposed to the burning sun for longer than this without protection, they risk harmful sunburn.

KEY FEATURES: It is not possible to determine how much UV radiation a textile allows to penetrate the skin simply by looking at and feeling the textile and thereby giving a UV protection factor comparable to those used for cosmetic sunscreens. To determine this so-called Ultraviolet Protection Factor (UPF), standardized measuring methods and a specialist test, as offered by the members of the International Testing Association for Applied UV Protection, are required.

KNOW MORE: https://www.uvstandard801.com/en/