Dry shampoos have been found by the FDA to contain elevated levels of benzene, a carcinogen (cancer-causing chemical). They also contain alcohol, which can lead to long-term damage to your hair and scalp, not to mention the propellants used in aerosol, and the inclusion of talc, butane, fragrances, etc. This is a recipe for disaster for not only the health of your hair and scalp, but your overall health and that of the environment.
Make the switch to clean, natural ingredients without having to compromise your style. CL3AN FREAK dry shampoo can be customized to your hair color, so ingredients will depend on your specific color. All have an arrowroot base, some darker colors include activated charcoal, cinnamon, and/or cocoa powder. 
I personally have dark brown hair with large silver streaks and the pictured version blends perfectly, unnoticeably into both colors. 
Includes application kabuki brush.