Detailed Product Description

Magic board,oil board,writing board's details as follows:

Instructions:1 Lift the superficial oil paper before writing and put it back for rewriting.

This product can be reused constantly.
2 .Oil reservoir may pile up after reusing for several times.

Something soft such as the face tissue can be used to wipe it even.
3 All can be used except such hard things as sharp edge or sharp point.

4 It is forbidden to put it in the mouth to lick.

The product is colorless and nonpoisonous,,which fundamental ingredients is lubricant