Why does my tattooed eyebrow liner appear blue on the skin when black and blue ink was used?

I would like to remove the tatoo . If the piment contains titanium dioxide the lazer surgery to remove the tattoo will not work- it will only darken the tattoo.Why does my tattooed eyebrow liner appear blue on the skin when black and blue ink was used?
Because the tattoo is on your face the ink fades, changing the color.Why does my tattooed eyebrow liner appear blue on the skin when black and blue ink was used?
maybe because it fades away