1.The marking will disappear by itself or spontaneously without any trace left. And the disappearing time will different with the ambient conditions from several minutes to several days(15 days), and can be controlled by the manufacturing. So if you have specific requirements for the disappearing time, advising us before the manufacturing.2.It can be written on many kinds of material's surface,especially use for fabric and clothing marking, garment and shoe marking,leather and wool marking, plastic and glass marking, ceramic and wood marking, and other materials like handicraft,embroidey,artificia flowers,etc..for temporary making.3.We can provide a variety of tubes/barrels, nib sizes and packing according to your specific requirements. And usually 4 colors are available, Violet & Pink and Blue for light color materials, and white marker for dark ones 4. Non toxic ink, and conforms to ASTMF963 and EN71PART3.