Mehendi coats the hair shaft with its colour ... Despite being natural, mehendi can cause allergic reactions in some individuals. Continuous exposure to mehendi can lead to scalp irritation ...

The difference between this and an allergic reaction was exemplified in patients who had both irritant and allergic reactions at the same time (see Fig 3). Additionally, patients that had ...

In some cases, individuals may experience more severe allergic reactions, such as hives ... hair colouring is damage it ...