At Purl Soho, we hand-wash and block everything with Soak cleansers. Super gentle, phosphate free, and fiber-friendly, Soak also smells great and softens fibers. Plus, you don't have to rinse it out! It's great for needlecrafters of all kinds, as well as people who hand-wash their clothes. Soak's 3-ounce packages are for one use and make great travel companions! Soak is made with plant-derived and renewable ingredients, without sulfates, silicones, SLS or SLES and stored in completely recyclable packaging. Nice!