COMMON NAME: Henna
OTHER NAME: Samphire, Madayantika
BOTANICAL NAME: Lawsonia inermis Linn.
PLANT FAMILY: Lythraceae
SYNONYMS: Lawsonia alba Lamk.
OVERVIEW: Lawsone (2-hydroxy-1,4-naphtoquinone), also known as hennotannic acid , is a red-organic dye present in the leaves of the henna plant (Lawsonia inermis). Lawsone reacts chemically with the protein known as keratin in skin and hair, in a process known as Michael addition, resulting in a strong permanent stain.
INTRODUCTION: Henna is shrub standing 1.0 to 1.5 m tall. It is glabrous and multi-branched, with spine-tipped branchlets. The leaves grow opposite each other on the stem and are glabrous, sub-sessile, elliptical and lanceolate. Henna flowers are white and fruits are small, brownish round capsules. Henna is a flowering plant used since antiquity to dye skin, hair, fingernails, leather and wool.
PHYTOCONSTITUENTS: Lawsone (2-hydroxy-1,4-naphtoquinone) – a red- organic pigment is the major active principle of henna leaves. Leaves also contains 1,4-naphthoquinone; 2-methoxy-3-methyl- 1,4-naphthoquinone; flavonoids, coumarins, and phenolic acids; 5-10% gallic acid and tannin, about 11% sugars, mucilage, resin, and others.
PARTS USED: Dried Leaf .
PRECAUTIONS: None known.
For educational purposes only. This information has not been evaluated by the Food and Drug Administration.
This information is not intended to diagnose, treat, cure, or prevent any disease.