It's easy and any one can do it. But it wastes and uses a lot of henna. Mehndi can also come in tubes or bottles. This provides a ready- made, less messy method of Mehndi application. Application takes about 10-15 minutes.
Elaborate designs can take longer.
After you apply the menthe you have to wait. You should keep it on for at least 5 hours. It might be uncomfortable at first but the longer you leave it on. The darker the color will be. Henna will set well if it dries with heat.