... days or so natural fade; This is a special magic pen.It has rose-red, orange, green, blue and violet ... can also disappear, without leaving any trace.With this magic pen that allows children to practice writing, but also not afraid ... on anywhere.3.Repeatly used,economy and beneficalV-CLEAR doodling pen,with the durability of 1 year,can be used ... doodling,enjoy the endless fun brought by V-CLEAR. pen