Scars are an intimidating blot on the skin, which are often different to differentiate unless otherwise done over with. Tattooing over scars is not a new thing to us and pictured above is an outstanding example of the same. This Zip tattoo looks to be one of the coolest ways to hide a scar that you hate to look at. The tattoo is in the form of a zip thatâs half open and it appears that you can zip it up or down to hide or reveal the scar.