Our mildew removal gel contains sodium hyposinate, carbomer and triethanolamine. It can remove black mold from any surface, clean long-attached black stains, and make the home environment cleaner. Its use is very simple: wipe the moldy part with a dry cloth; Squeeze the gel evenly onto the surface; Wait 3 hours and rinse with water. The mold removal gel is designed with a needle tip to easily remove molds in tiny gaps.