It can help slightly, since a fridge is dark, cool and has a stable temperature, all things that slow down the oxidation and degradation that shorten a perfume’s life, but it’s not essential and comes with a couple of practical downsides.

Why cool and dark helps

Heat speeds up the chemical reactions that cause perfume to degrade, so a consistently cool environment does genuinely slow that process down. Some perfume enthusiasts do keep precious or rare bottles in a mini fridge dedicated to the purpose for exactly this reason. A standard kitchen fridge works on the same principle, though opening and closing the door repeatedly does introduce some temperature fluctuation.

The practical downsides

  • Cold perfume smells noticeably muted when first sprayed, until it warms back to skin temperature
  • Condensation on the bottle when taken in and out can be an issue over time
  • It’s simply not necessary for most everyday bottles you’ll get through within a year or two

For most people, a cool, dark drawer away from a bathroom’s heat and humidity does the job just as well. Our perfume storage guide and complete guide to perfume cover practical storage in more depth.