Blue air-soluble ink shows where glue has been applied. Color fades as glue dries; however, any remaining glue washes out. Soak lace or similar product to completely remove glue if necessary.
NOTE - Always test glue on a swatch of fabric to be sure that it can be removed satisfactorily before using on your project.
Water-soluble glue REFILLS also here for your convenience. There are other brands of glue pens on the market; however, we have found the FP to be the best buy and does the job as well or better and for less money!