Safe on sportswear fabrics halo proactive sports wash is safe on most common fabrics cotton polyester denim and widely used sportswear clothing such as lycra gore tex nylon elastane spandex viscose and many more how it works bacteria caused by sweating trapped in the weave of the clothing produce bad odours most detergents mask odours by leaving soap residue on your clothing halo proactive sports wash kills the bacteria which are trapped in the weave of the fabric thus allowing the c