Lice Off Anti-Lice Shampoo is herbal & skin safe formula designed to kill lice and its egg (nits) effectively. Head lice are tiny parasitic insects that are adopted to strong grips of the hair. Lice feed only on human blood. Lice eggs called nits are white or pearl in color and about 0.8 cm long. Immediately after nits are layed, the female attaches them to the hair shaft using special cement-like material. Lice Off Anti-Lice Shampoo is a natural option for treating lice infestations, using ingredients that come from botanicals, essential oils, and other gentle yet effective sources.