Drain - Blocked Bath
Only use chemicals if steps 1-4 fail. Lye-based cleaners (like Drano) generate heat to melt hair, but they are dangerous for your pipes if used too often (they can eat old metal pipes or soften PVC joints).
Go find a wire hanger or buy a Zip-It tool. In 90% of cases, pulling out the hair monster will solve your problem instantly. Happy (draining) bathing! blocked bath drain