Fix and color stress cracks, crazing, and scratches in one application. No mixing, no sanding prepwork, no unpleasant fumes. MagicEzy Hairline Fix is a one-part, pre-colored sealant that repairs gelcoat stress cracks, scrapes, and scratches. Hairline Fix is also used to provide a glossy top-coat for 9 Second Chip Repair (item #837280). Use Hairline Fix to help prevent cracks from spreading. For use above the waterline. 0.43 fl.oz. (12.9ml) resealable tube.