- Ink is non-toxic, environmental and harmless to skin without irritation, which is not easy to remove but won't remain on the skin forever.
- Ink particle is 5-10 um, which will not enter into the skin.
- Sterile pen is suitable for marking and positioning on the skin.
- Having tips at both ends, a regular tip and a ultra fine tip for detailed work.
- Making clear mark fluently.
- Disposable for single use only.