If your shower drain remains sluggish even after applying chemical liquid drain openers like Drano, it is usually because chemical drain cleaners cannot dissolve dense hair clogs, which are the primary cause of bathroom blockages. Liquid chemicals rely on harsh lye to liquefy organic grease and food, but hair is virtually impervious to standard drain chemicals. Furthermore, if the clog is located further down in the P-trap, the liquid may bypass it without clearing it. Verification: Use a physical plastic drain snake or wire auger to hook and pull out the trapped hair mass.
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