Makes a bright blue mark. Marks can be easily removed with a damp cloth. Used properly the Hesch 9 Water Erasable Pen is the safest and most convenient marker available on the market today. Instructions: Always test the marker on a spare swatch of your fabric before using making sure marks remove to your satisfaction. On rare occasions certain dyes in material (dyes containing red in particular) may make marks difficult to remove. 1. Mark lightly on wrong side of fabric. 2. To remove markings rub gently with a well moistened cloth. 3. Occasionally the mark will reappear when the fabric dries. Simply repeat the process. also use Extra Smooth and Soft Tailoring, Sewing Marker Pencils - Self Peel and Dust Free Marker Pencils. A set of 12 high quality dust free tailoring / sewing chalks. Ideal for sewing, tailoring, fashion designing, boutique, quilting, alteration, etc. for drafting stencil templates, drawing neck line while drafting pattern for tailors, fashion designing, boutique, sewing, etc. Also use our other tailoring and sewing tools and kits like tailoring scales, armhole curves, French curves, meter scale, designer's hip curves, leg curves, arm curves, thread cutter scissors, piping threads, tracers, tailoring and sewing needles, sewing machine needles, seam rippers, measuring tapes, sewing machine oils and oil dispensing cans, tailoring sewing chalks / markers, etc. We have all items for tailoring, sewing, boutique, fashion designing accessories and tools and light weight tailoring sewing scissors.