The basics Our best-loved formula for dark and vibrant laundry, in the ultimate warm, fresh-from-the-dryer clean laundry scent!  The benefits Darks Detergent features a bio-based formulation that's specially designed to keep your dark and brightly colored laundry fresh and vibrant.  The uses Optimized for cold water cleaning, this formula contains a blend of four powerful enzymes that target stains, dirt, and oil for a beautiful clean on everyday fabrics, from your favorite dark wash jeans to richly patterned blouses and bed linens. The bottom line Pair with The Laundress Fabric Conditioner and Fabric Spray in Classic for a sensorial, start-to-finish laundering experience.