Use only in a well-ventilated area. Shake well. Turn the garment inside-out and apply the solvent to the underside of the heat applied material. This will release the vinyl from the substrate. Once you have applied the solvent, it is best to stretch or pull the area of the mistake. This will make the heat applied material start to peel off of the garment. Pull off the remaining letter. Remove any residue left on the front side of the garment by applying AlbaChem Vinyl Letter Remover to a clean white rag and rubbing off the residue. Repeat process if necessary.