How does Saline Tattoo Removal Work?

Saline Tattoo Removal uses the process of osmosis to remove the tattoo. Saline is pushed and applied into the tattooed area using a tattoo machine and tattoo needle. The pigment is pulled up towards the surface of the skin. This is because if there are two liquids next to each other, if the membrane separating them is porous (in this case the skin), the liquid with a lower salt content is drawn to the liquid with the higher salt content, drawing the pigment with it.