Observation:
Henna dye is frequently used for hair dyeing and skin decoration instead of permanent tattoos. Some substances are combined with henna to improve the efficiency. Even though paraphenylenediamine is one of the most common sensitizer in henna tattoo as additive, the other additives and henna itself may cause allergic contact dermatitis reactions. In here; 4 cases that had allergic contact dermatitis due to henna tattoo from different regions of western side of Turkey were reported. Differ than other patients one had nickel and cobalt positivity in patch test beside phenylenediamine sensitization. Considering the review of literature; we recommend for the patients with allergic contact dermatitis reactions diagnosis due to henna tattoo as well as pphenylenediamine, patch tests for heavy metals should be conducted.
Keywords: Henna, allergic contact dermatitis, heavy metal