让观众随便抽出一张牌,魔术师回避不需要看是什么牌,让观众把这张牌写在纸上叠好,　接下来让他把纸叠好放在灰缸里，给他一盒火柴或一个打火机，让他点燃这张纸，烧到只剩下灰烬。

最后，你收集这些灰烬放在你的手背上轻轻擦一下,哇....观众选的那张牌,就显示出在胳膊或手背上了.让观众百思不得其解.
 
擦出的字体非常清晰,预言笔可反复使用2000次左右!

演示地址:

https://cloud.video.taobao.com//play/u/1078603494/p/1/e/6/t/1/386567357149.mp4

https://v.youku.com/v_show/id_XMTgxNTgwMzM2OA==.html?spm=a2h0c.8166622.PhoneSokuUgc_2.dtitle

Ash Pen

With this handy accessory, you can now perform the "ashes on the arm" effect not only very easily, but almost impromptu. It also opens up a wide range of effects not previously possible.

The special pen allows you to write an invisible message on your arm. When rubbed with ashes the message will become visible.

Notice: this pen can just be used successfully on the skin.

DEMO: https://www.youtube.com/watch?v=5Lbs15SpYTg