There are a few ways that you can remove UV dye stains, depending on the fabric and the severity of the stain. For example, if the stain is fresh and on a washable fabric, you can try pretreating it with a stain remover or soaking it in oxygen bleach. If the stain is more stubborn or on an non-washable fabric, you might have to resort to using a strong solvent like acetone or dry cleaning fluid. Whichever method you use, be sure to test it on an inconspicuous area of the fabric first to avoid damaging it.