Charlie's Soap is environmentally friendly to all land, air and marine life, when used as directed, because it contains only the purest natural ingredients. Charlie's Soap contains no lye, phosphates, bleach, brighteners, dyes, softeners, petroleum, perfumes, or other fillers. Other detergents use lots of additives that stick to the fibers in your clothes (and washer) that make them appear clean and smell fresh. The residue of these additives can irritate delicate skin and wear out your clothes. But Charlie's Soap cleans all the way to the fibers and rinses clean. There's no residue to stiffen the fabric, so no softeners are usually needed. Charlie's Soap restores the natural softness to cotton, microfibers, and silk and is the perfect choice for laundering cloth diapers.