Red-1 is the professionals choice for removing synthetic food dyes. Fast acting! Good for all wet-cleanable synthetic fiber types. Free rinsing and leaves no residue. Shake well before using. Apply Red-1 to stains prior to your cleaning set up. Then perform your cleaning procedures like normal. Most, if not all, of the colored stains will be gone, depending on dwell time and temperature. Any stains that remain may require heat activation.