All Woolite® products are liquid detergents and are specially formulated for the machine to not cause shrinking, stretching, or fading on washable suede, linen, cotton, washable wool, silk, rayon, polyester, cotton/polyester, nylon, nylon/spandex and rayon/spandex. All Woolite products have the perfect balance of clean and care- keeping the clothes you love looking and fitting like new for up to 20 washes!