What is a tattoo cover-up?
A tattoo cover-up can be one of 2 things.
1. Makeup or concealer specifically designed to temporarily cover a tattoo or scar.
2. "the act of tattooing over a previously unwanted tattoo with a new tattoo. It is usually seen as being one of two options of removing an unwanted tattoo; the other option being laser removal. ... White ink may sometimes be applied to lighten the old tattoo before proceeding with the cover-up."