If your bathroom sink is taking longer and longer to drain, the culprit is almost certainly the same thing it always is: hair tangled with soap residue, sitting about 30cm down the pipe. The good news is you don't need chemicals, a plumber, or to take any pipes apart. You just need the right tool and 30 seconds.
Here's how to clear it.
Why bathroom drains clog (it's not what most people think)
Most people reach for chemical drain cleaners as the first response. Those products are caustic, bad for older copper pipes, harmful to anyone with sensitive skin, and — worst of all — they often don't even reach the actual blockage. A typical hair clog sits between the basin trap and the U-bend. Liquid drain cleaner dissolves the soft outer layers, but the dense matted hair core stays exactly where it is, ready to catch the next strand and the next.
The real fix is mechanical: you reach down into the pipe and physically pull the hair out.
The 30-second method
- Take off the drain cover or stopper if your sink has one. Most lift straight out.
- Insert a flexible drain tool with hooked teeth. Push it down slowly until you feel resistance. You're now sitting in the clog.
- Twist the handle a quarter-turn. The hooks bite into the hair.
- Pull slowly upward. The whole mass usually comes out in one go.
- Run hot water for 30 seconds to flush any loose debris.
That's it. The drain should empty in seconds.
What about other drains?
Same method works on shower drains (where the problem is almost always worse because of accumulated hair from washing). Kitchen sinks too — though the clog there is usually congealed grease and food rather than hair, so a flexible tool with hooks is less effective. For kitchen drains, prevention via a strainer beats cure.
Stopping it happening again
Two changes will keep your bathroom drain clear for the long run:
- Fit a pop-up hair strainer in the basin drain. It catches hair before it ever enters the pipe.
- Run the flexible tool monthly as a quick preventative pass, even if the drain seems fine.
When to call a plumber
If you've tried the above and the drain still won't clear, the blockage is deeper than the trap — usually in the main soil stack. That's a job for a professional. But in our experience that's roughly one in twenty calls; the other nineteen are the simple hair-in-the-trap situation we just described.
The SwiftFix tool we built for this
If you don't already have a flexible drain tool, ours is built specifically for UK bathroom sink configurations — 51cm long, flexible enough to navigate the U-bend, with hooked teeth that grab and hold hair rather than push it deeper.
See the SwiftFix Flexible Drain Hair Remover →
FAQs
How often should I clean my bathroom drain?
Once a month is plenty if you fit a hair strainer. Without one, every two weeks.
Will this damage my pipes?
No. A flexible plastic tool is far gentler than metal augers or chemical cleaners. It works with the pipe, not against it.
Why does my drain smell?
The same hair build-up that slows the water also rots and produces hydrogen sulphide — that distinctive eggy smell. Clearing the hair almost always clears the smell within a day.
UK delivery, 14-day returns. Tools that earn their place in your home. Email swiftfixstore@gmail.com any time — real reply within one working day.