Le Blanc® Towelwash® does not contain softeners or optical brighteners, which damage towels and ruin their absorbency. Even after repeated washing, towels will remain soft, full, and absorbent. All of our washes work in cold water, so you never have to worry about heat breaking down the threads. Towelwash® may be used on all washable, organic fabrics including Egyptian cotton, silk, bamboo, modal, SUPIMA®, and more.