In this study, influence of nano-zinc oxide treatment on the UV protection properties widely used apparel fabrics including flax, polyester, and nylon, were investigated by means ultraviolet factor (UPF) assessment. Nanoparticle content nylon determined to be 1.2, 0.9, 1.5 wt%, respectively. The UPFs non-treated in range 2.2 entire region. An improvement UPF was obtained after introducing nanop...