Crystal Lane Glue Pen is the perfect glue to be used in DIY craft activities. The thin lid of the glue makes it suitable for small flatback crystals and rhinestones. It is a non-toxic, non-flammable, and washable glue. So you can wash your clothes worry-free. It is to be applied at the back when the crystal is dry and debris free. Keep out of reach of children. Crystal lane Glue pen is intended for adult fashion and decorative use only.