About the product
- Pink pen: 1-7 days disappear, or use water to wipe them off immediately.
- Purple pen: 2 to 14 days automatically fade or use water to wipe them off
- Blue pen : writing trace does not disappear automatically, but it can easily and quickly erasable by water
- Green pen : Automatically disappear, or quickly erasable by water
- Can write on any surface, especially use for dress marking, shoe marking, handicraft, embroidery, cross stitch, patchwork, needlework and artificial flowers, etc.
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