Gives a purple marking. Markings disappear automatically after a certain time and can be easily removed with a damp cloth. INSTRUCTIONS Always test the marker pen on a fabric sample before using it to ensure marks disappear to your satisfaction. In rare cases, certain dyes in the material (especially red dyes) can cause the markings to be difficult to remove. - Lightly mark on the back of the fabric. - To remove marks, gently rub them with a well-moistened cloth. - Occasionally the marking will appear again when the fabric dries. Just repeat the process.