The Neon Nits Bright White Lice Egg Locator Spray has been tested by the renowned Kross Link Laboratories and The Vienna Institute of Health for the treatment of head lice. This egg-locating spray has been proven to work effectively with a wide spectrum of hair colors from blond to black. The coloring is also very easy to wash out once applied. Using a patented formula, the Neon Nits Spray colors nits using a fluorescent dye that becomes noticeable one dried. Non-toxis ingredients mean that this spray can be used with chldren and adults. Use this in combination with the ERADICATOR 3 Piece Lice Kit for complete protection and treatment against lice and nits.