Earth Friendly Wave Gel Free & Clear is an all-natural dishwasher soap with N.O.P. certified organic lavender essential oil. As with all Earth Friendly products, Wave Gel Free & Clear phosphate-free, chlorine-free and caustic-free, which means no etching - ever. Neutral pH; biodegrades quickly. This dishwasher detergent is so unique, a U.S. patent was granted.