The usual advice is to replace a pillow every one to two years. It is a reasonable average and a poor rule, because it ignores what the pillow is made of and how you have treated it. A cheap polyester-fill pillow can be finished in eight months. A well-made foam one can still be doing its job at three years.
The test that beats the calendar
For a foam pillow: press your palm into the middle and let go. It should push back and return to its shape within a couple of seconds. If the dent lingers, the foam has lost its structure and it is no longer holding your neck up, it is just sitting under it.
For a fibre or down pillow: fold it in half and let go. A pillow with life in it springs open. One that stays folded is done.
Other signs it is time
- A permanent dip where your head goes that does not fill back in
- You wake with neck ache that fades within an hour of getting up
- You have started doubling up, folding it, or propping it against the headboard
- Staining that washing no longer shifts, or a smell that comes back after cleaning
- Morning sniffles or congestion that settle once you are out of the bedroom
Why pillows get heavier with age
A pillow absorbs sweat, skin cells and oil every night. Over years that builds up inside the fill, and it is the reason an old pillow is measurably heavier than it was new. It is also why a pillow with no removable cover ages badly: you can never actually clean the part that is getting dirty.
This is the practical argument for a cover that comes off. Washing the cover every few weeks keeps most of that out of the foam itself, and the foam lasts longer for it.
How to make one last
- Use a pillow protector under the cover. The cheapest thing you can do to extend the life of the pillow.
- Wash the cover, not the foam. Memory foam should never go in a washing machine. The agitation tears the cell structure and it does not recover.
- Air it. Leave it uncovered for an hour when you change the bed. It dries out the moisture from the night.
- Spot clean spills. Damp cloth, mild soap, then let it dry fully before the cover goes back on.
- Keep it out of direct sun for long spells. UV breaks foam down over time.
A note on new-pillow smell
Foam that has been compressed for shipping often has a faint smell when you first open it. It fades over a few days of airing. Buying CertiPUR-US certified foam, as ours is, means the foam has been tested for low VOC emissions, which is the substance behind that concern rather than the smell itself.
If your current pillow failed the press test while you were reading this, that is your answer. Ours come with a 100-night trial and 30-day money back, so there is a way to find out whether a replacement actually fixes the morning stiffness before committing to it.
