Woolite Darks Defense is a first of its kind formula that keeps your clothes looking like new for up to 20 washes, even synthetics and blends. It protects your clothes from fading, pilling, for up to 20 washes and stretching for up to 6 washes. Woolite Darks Defense is perfect for all of your dark clothes, including your favorite jeans, leggings, and go-to blouse. It effectively cleans without the harshness. Woolite Darks Defense is free from optical brighteners, phosphates, and bleach.