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How to Wash Polyester

Polyester washes at 30–40°C on a normal cycle. The right detergent, how to dry it, and the one mistake that causes most polyester damage.

Fabric Care1 min readPublished Priya Nair

In short

  • Wash at 30–40°C (86–104°F) on a normal cycle, using standard; no softener on technical fabrics.
  • Dry line dry or tumble low — it dries very fast. Iron: cool only; it melts.
  • Polyester is dimensionally stable, so the main risks are heat damage and finish rather than shrinkage.

Polyester is a plastic, so it melts rather than scorches. A hot iron leaves a permanent shiny mark that cannot be removed.

How to wash polyester

Care guidance by garment
GarmentWashDryNotes
Polyester30–40°C (86–104°F)line dry or tumble low — it dries very faststandard; no softener on technical fabrics
Care guidance by garment

Use a normal cycle and standard; no softener on technical fabrics. It holds odour more than any natural fibre because body oils bind to the hydrophobic surface and ordinary washing does not lift them.

Drying and ironing

Dry line dry or tumble low — it dries very fast. For ironing: cool only; it melts.

A white vinegar soak before washing breaks that bond and is far more effective on set-in polyester smell than more detergent.

How long it should last

Five to ten years; it usually outlasts the wearer’s interest in it.

Quick reference

Polyester at a glance

  • Wash: 30–40°C (86–104°F)
  • Cycle: normal
  • Detergent: standard; no softener on technical fabrics
  • Dry: line dry or tumble low — it dries very fast
  • Iron: cool only; it melts

Frequently asked questions

What temperature should I wash polyester at?

30–40°C (86–104°F), on a normal cycle with standard; no softener on technical fabrics.

Does polyester shrink?

Not significantly. Polyester is dimensionally stable — the risks are heat damage and loss of finish rather than shrinkage.

How should I dry polyester?

Line dry or tumble low — it dries very fast.

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