Use for painting on fabric fabric or for faded areas of clothing. Both bold and fine lines can be written on both thick and fine surfaces with a single thread. Water-resistant pigment ink makes it smudge resistant and water resistant, and weather resistant. How to use: Please test on the edge of the cloth you are using and use the product on the area you want to write as it does not fade. Can also be used for faded areas such as denim. Precautions for Use: Please tighten the cap after use. Depending on the fabric such as brushed or synthetic fibers, this product may not be suitable for use. Please test it on the edges of the fabric. Writes will fade after multiple washes.