No, regular household bleach will not unclog a shower drain. While bleach is a powerful disinfectant and whitening agent that can kill mildew and eliminate drain odors, it lacks the chemical properties needed to dissolve human hair, soap scum, or mineral scale blockages. Pouring bleach down a slow drain only sanitizes the surface slime without clearing the physical obstruction causing the backup. Verification: Use a mechanical drain snake or hair removal tool to physically extract hair clogs from the drain pipe.
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