While Mehndi is generally safe for most people, some individuals may experience allergic reactions. It is always best to do a patch test before applying Mehndi to a large area of skin.

Mehndi can last anywhere from a few days to several weeks, depending on factors such as the quality of the paste and how well it is cared for.

Mehndi stains usually fade over time, but you can try removing them quickly by scrubbing the area with a mixture of lemon juice and baking soda.