The sculpting pen is the principle of razor. Like shaving. It is very sharp.
Professional use only for groomers.
Specially designed for hair outlining, undercut and tattoo.
Consistent with its sharp and smooth blade, professionals can create different hair tattoos, straight lines, and other hair designs easily.
Important 
The shaping pen may slightly damage the skin if it is the first time to use it as it’s a very sharp blade do not press too hard.
The angle of use of the engraving pen is very important! The 45 degree angle oblique engraving effect is better!
Package includes: 
1pcs engraving pen + 10pcs blade + 1pcs Clip + 1pcs Instruction manual