If you've ever wanted to cut down on your environmental impact by using less water, strip washing is for you. The system uses Rhassoul clay and an alum crystal, and is said to only require a sinkful of water.

Strip washing is practiced throughout Africa and Morocco, and is appropriate for both hair and body. Rhassoul clay is prized for its ability to draw out toxins--a primary reason for its prevalence in inch-loss body wraps and other innovative spa treatments.