|Description||Specifications||Questions & Answers|
FriXion pens use a special thermo-sensitive ink that turns invisible when rubbed with the pen's special friction "eraser." The ink disappears cleanly without using up the eraser or creating any dust or smearing.
The ink will also disappear if exposed to other sources of heat or friction, so we advise against using these pens to address envelopes or leaving anything written with them in a hot car. Like magic ink, erased FriXion ink reappears if placed in a freezer or otherwise exposed to temperatures below 14° F (-10° C).