Zep Advanced Tub & Shower Drain Opener Gel delivers a powerful, fast-acting solution for stubborn clogs. Specially formulated to dissolve hair, soap scum, and conditioner buildup, this bathtub drain cleaner works quickly to restore proper drainage. Whether you're dealing with a slow-draining tub or a completely blocked shower, this shower unclogger is the best drain cleaner for showers and tubs, providing a fast and effective solution.