Re: ~~~Are Tattoos Allowed in Islam?~~~~
Tattoo is created by injecting the colour pigment into the skin. While henna/mehndi is just colouring over it. Moreover henna is temporary while tattoos are permanent. Permanency of them causes the invalidity of Wuzoo( وضو ) you do for prayers and also the invalidity of ghusal( غسل bath) when you have to do it obligatory.