Henna is an oriental shrub known since ancient times for its benefits. It strengthens, gives body to the hair and protects it from bad weather. Black Henna Liquid is nature's safe way to color and condition hair, recommended for women who want to free themselves from chemical dyes and bleaching agents. Henna is an oriental shrub known since ancient times for its benefits. It strengthens, gives body to the hair and protects it from bad weather. Black Henna Liquid is nature's safe way to color and condition hair, recommended for women who want to free themselves from chemical dyes and bleaching agents.