Guess it depends on what you are looking for. Both have to be large if you want any detail & will get even larger & blurrier over time. Thats why tattooing is the most used form of marking skin & even that the colors fade & the lines broaden over time. My slave has a cutting tattoo where the cuts where made & ink applied . Its not that old really, heck she is only 24. Anyway its rather large & totally unreadable. I have tattoos older than her, LOL ,that while not as sharp as they once were are totally readable.

Dont know if this was the info you were looking for but its really all I know about it from what I have seen