Henna is a natural dye made from the leaves of the henna plant, scientifically known as Lawsonia inermis. It has been used for centuries in various cultures for body art, hair coloring, and even as a fabric dye. The dye is typically applied in a paste form, creating intricate designs on the skin that can last from a few days to several weeks. The application of henna is especially popular in South Asian and Middle Eastern cultures, where it is often used during celebrations like weddings and festivals. The designs, known as mehndi, are not only decorative but also hold cultural significance, symbolizing joy and good fortune.