[Product description] 

Marks do not disappear naturally but can be erased with water.
Features a crystal tip that maintains its fine point. Extremely fine type, ideal for delicate and detailed designs or markings.

[Note]
Depending on the material, marks may not erase, so please test in advance.
Do not use an iron or hairdryer before erasing, as this may set the marks.
Always replace the cap after use.