No — a colour change on its own is not a reliable sign that a perfume has gone off. Smell is the better test, because some perfumes darken naturally with age while still smelling perfectly good.

Colour Is Cosmetic More Often Than You’d Think

Perfumes rich in vanilla, amber, oud or certain resins often deepen from gold to amber to brown over a year or two purely through natural oxidation, with barely any change to how they actually smell. This is especially common in naturally-derived or less-filtered compositions, where a bit of colour drift is simply part of how the ingredients age.

What to Check Instead

  • Smell the perfume on a blotter or the back of your hand rather than straight from the bottle
  • Watch for a sour, vinegary or flat chemical smell — that is the real red flag, not colour
  • Note whether the top notes still feel bright, or whether the whole scent has gone muted and one-dimensional
  • If it still smells like itself, colour change alone is not a reason to bin it

We go into storage conditions and shelf life properly in our perfume storage guide, part of the broader complete guide to perfume.