Effects of Repeated Treatments of Perspiration, Weathering, and Laundering on the Ultraviolet Protection of a Naturally Colored Lightweight Cotton Fabric

The purpose of this study was to examine the effects of repeated treatments of perspiration, weathering, and laundering as well as their interactions on the ultraviolet radiation (UVR) protection of a naturally colored cotton lightweight fabric suitable for summer clothing. The research design was a 2 (perspiration) × 3 (weathering) repeated measures (measured before and after each laundering cycle, up to 15 cycles) experimental design. Complicated interactions were found among these three treatment factors. Laundering alone (without weathering) increased the UVR protection, whereas weathering significantly reduced the protection. The conditions in a hot and humid climate facilitated the decline of protection, but perspiration played a role in slowing down the reduction.