Influence of wetness on the ultraviolet protection factor (UPF) of textiles: <i>in vitro</i> and <i>in vivo</i> measurements

Abstract

Fabrics do not need to be tested when saturated with tap and with salt water. Testing fabrics wet and dry should be done, as the effect of saturating fabric on UPF value varies. Fortunately, UPF values for wetted fabrics reveal only the effect of increased moisture content in the fabric and have nothing to do with wetting of the skin by the fabric.