Henna tattoos (mehndi)
Henna is a plant-based colouring that is used as a hair dye. Direct application of henna to the skin to create a temporary tattoo is a process known as mehndi.
The most common problem caused by henna is a skin reaction (contact dermatitis) to the pigment in the dye. Permanent loss of skin colour (hypopigmentation) in the design of the original tattoo has also been reported. Health Canada has issued a health advisory regarding the use of black henna temporary tattoo ink and paste, which contains para-phenylenediamine (PPD), a substance considered unsafe when it comes in prolonged contact with the skin. Because of the risk of developing an allergic reaction to PPD, Health Canada recommends that you avoid this dye for henna tattoos.1
The risk of developing a severe allergic reaction to henna increases after an episode of contact dermatitis. For that reason, it is recommended that you avoid hair dyes containing henna if you have had a previous problem with an allergic reaction to henna in a temporary tattoo.
Your first henna tattoo should be in a place where you can cover it if it lasts longer than you expect. It is not a good idea try to remove your henna tattoo; let it naturally wear off. Be very careful not damage your skin—do not scrub or pick at your tattoo.
| Author: | Sydney Youngerman-Cole, RN, BSN, RNC | Last Updated: November 9, 2006 |
| Medical Review: | William M. Green, MD - Emergency Medicine Adam Husney, MD - Family Medicine Alexander H. Murray, MD, FRCPC - Dermatology | |
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