It is always recommended to wash once before first use. Machine wash in warm water on gentle cycle using a minimal amount of liquid detergent (use only non-chlorine bleach if needed). Avoid using powder detergents, fabric softeners, or detergents that contain phenol derivatives, borax, sodium chloride, or anti-foaming agents. Use mild liquid detergents, avoid washing your hair towel with other fabrics that may contain chemicals, dry using low heat or air dry & hair in a dry place.