How often should you replace your shower filter cartridge?
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Your shower filter works hard every day. Here's how to keep it performing at its best.
The 90-day rule
We recommend replacing your Purified Beauty cartridge every 90 days. That's the point at which the filtration media in most households has done its job and deserves a fresh start.
When to replace sooner
Water quality varies significantly across the UK. You may need to replace your cartridge more often if:
- You live in a hard water area (much of the South East and East of England)
- Your household showers frequently
- You notice changes in water flow or how your hair and skin feel after showering
How to tell it's time
The clearest signs are the ones that made you try a filter in the first place creeping back: hair feeling drier or heavier, skin feeling tight after showering, or a noticeable drop in water pressure.
Replacing your cartridge
Swapping a cartridge takes a couple of minutes, with no tools — our installation guide walks you through it step by step. And if you'd rather never think about it, choose Subscribe & Save on cartridges and a fresh one arrives on schedule, with 20% off.