Viscot sterile skin scribe tattoo marker pen is used for free hand drawing on skin. The ink in this pen is formulated for marking on skin and will go on easy and stay on. Although not using a non-smudge ink, this marker is ideal for smaller free hand pieces where smudging is not as much of a concern. This is our most economical skin scribe for free hand. These pens are specifically designed for skin marking purposes. They are commonly used in the medical, dental and tattoo industry.