Use the Dritz Mark-B-Gone Marking Pen to transfer patterns, design quilts, and needlecraft. The Dritz Mark-B-Gone Marking Pen is easy to apply and can be removed with a damp cloth. Test the Dritz Mark-B-Gone Marking Pen on each fabric before use. For best results, use on washable fabric. The pen is not recommended for dry clean only materials. To extend the pen's life, store it with the cap on and point facing downward. Please Note: Do not iron over marks or launder before completely removing with plain water. Some laundry products containing sodium hydroxide or sodium carbonate may set marks if they are not completely removed before laundering.