What is Henna (Lawsonia Inermis )? Henna is the tall Shrub, native to the Indian Subcontinent and northern Africa. Dry leaves powder of this shrub is used as natural Henna dye to achieve orange to copper red tone on Hair and skin. What should I Keep in mind while using Henna Powder? It is for external use only. Henna needs liquid/water and time to release the dye. Keep Henna paste for at least 5-6 hours before application. Henna paste can stain your skin. Apply Vaseline or other thick lotion on the forehead and behind the ears before Henna application. Wear hand gloves and/or use the mask applicator to apply Henna on the hair strand. Longer the Henna stays on Hair, deeper will be the color shade. To get the darker shade, keep Henna for at least 3 hours before washing with water. Do not use shampoo for 72 hours after Henna application. It can cause irritation of the eyes. If direct contact occur, rinse the eyes imme