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Mehndi is a traditional tattooing that uses paste made of henna plant. This paste is used for creating complex temporary tattoos on palms and feet of women of India and other places. Read more about history of henna tattooing.
To have a nice image on your body you don't have to suffer the pain and, in some cases, you don't even have to lose a lot of time. That is what temporary tattoos are for. Here you can read more about tattooing with ballpoint pen and other temporary tattoos.
Permanent makeup is relatively recent fad (although there are some ideas that it is much older).It is a form of tattooing that replaces the need to apply classic makeup or it is used to rectify imperfections like a loss of pigment or scars. Read about history of permanent makeup.
Tattoos aren't just pretty (and some less pretty) pictures on the skin. They can save lives and make a life easier to people that are ill. They are used for that purpose since the ancient times but are more and more popular lately. Read about history of medical tattoos.