For your convenience, Persil Silk and Wool washing liquid also includes dosing ball on the lid. This washing liquid leaves your clothes with a fresh fragrance that goes on and on. Persil Silk and Wool washing liquid is gentle next to your skin and your clothes. With it's Non-Bio formulation, this washing liquid is ideal for sensitive skin. A washing liquid that is gentle on delicate fabrics including silk, wool, and lingerie. Persil Silk and Wool washing liquid is designed especially to wash delicate fabrics, manually or with a hand wash cycle in your machine.