henna

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hen·na

(hen'ă),
The leaves of the Egyptian privet, Lawsonia inermis; used as a cosmetic and hair dye.
[Ar. hennā]
References in periodicals archive ?
Officers from trading standards believe more products on sale in Newcastle could contain a cheap black hair dye instead of genuine henna.
Traditional non-harmful henna is orange or red in colour while the "black henna" available on Tyneside contains the hair dye chemical.
He added that black henna, which contains many dyes and preservatives, is also hazardous and can cause skin infections.
Mehndi - henna body tattoos - are no longer exclusively the preverve of Asian brides.