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name for a reddish or black hair dye obtained from the powdered leaves and young shoots of the mignonette tree, or henna shrub (Lawsonia inermis), an Old World shrub of the loosestrifeloosestrife,
common name for the Lythraceae, a widely distributed family of plants most abundant as woody shrubs in the American tropics but including also herbaceous species (chiefly of temperate zones) and some trees.
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 family. Henna dye has long been in use, as evidenced by Egyptian mummies; the dye is also to decorate the skin with designs.



a reddish yellow dye obtained from the leaves of the henna plant (Lawsonia inermis). Henna is used for dying wool and silk fabrics reddish brown; the dye is light-fast, and is also used for dying hair and coloring nails.


Lawsonia inermis. An Old World plant having small opposite leaves and axillary panicles of white flowers; a reddish-brown dye extracted from the leaves is used in hair dyes. Also known as Egyptian henna.


1. a lythraceous shrub or tree, Lawsonia inermis, of Asia and N Africa, with white or reddish fragrant flowers
2. a reddish-brown or brown colour
References in periodicals archive ?
Following an analysis of one product, an expert from West Yorkshire Analytical Services wrote: "The ingredients list included rosha oil, nilgiri oil, water and henna.
Referring to a product named Saniya Hair Henna, the specialist added: "The labelling did include an ingredients list however in my opinion, the labelling is likely to mislead consumers into thinking that the dyeing action of the product is due to the henna ingredient alone.
Among those analysed was a product named Sanam Special Dulhan Henna that boasted of containing rosha and nilgiri oil.
In a report for the authority, Newcastle City Council's Paul Leighton said: "Internet-based research demonstrates widespread acknowledgement that there is an issue with unsafe henna products.