When washing delicate materials, you need an extra gentle detergent. Since wool and silk are natural materials that consist of nothing but protein, this laundry detergent is free from protease, an enzyme that dissolves and breaks down protein-based stains. Delicate Laundry Detergent contains natural ingredients and targets dirt, stains, and bacteria at temperatures as low as 20°C. Washing at lower temperatures prolongs the lifespan of your clothes and saves water and energy.