Sensitization and Clinically Relevant Allergy to Hair Dyes and Clothes from Black Henna Tattoos: Do People Know the Risk? An Uncommon Serious Case and a Review of the Literature

Henna (Lawsonia inermis L.) tattooing has been used in Egypt and India since ancient times.Today this temporary body art is becoming increasingly popular among young people.Various chemicals are added to henna to darken and enhance the definition of tattoos, especially para-phenylenediamine (PPD), which is a strong sensitizer known to cause cross s

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