How to Care for Polyester

Polyester is one of the most widely used fabrics in modern clothing for good reason: it is durable, colourfast, quick-drying, and holds its shape through repeated washing. It is also one of the fabrics we see come to our Maple Ridge facility most often with care problems that stem from the same misunderstanding: polyester being treated like cotton. The result is garments that stay smelly no matter how often they are washed, or activewear that gets stiffer and less comfortable with every cycle.

The Key Property You Need to Understand

Polyester is hydrophobic. It does not absorb water the way cotton does, which is why it dries so quickly. The problem is that this same property means it does not absorb water-soluble substances during a wash cycle the way cotton would. Instead, it bonds preferentially with oils — body oil, sweat-derived lipids, skincare product residue — and holds them tightly within the fibre structure.

This is why a standard wash that cleans a cotton t-shirt thoroughly may leave polyester technically rinsed but not actually deodorised. The oil-bound odour compounds are still there.

Pretreatment: the Non-Negotiable Step

For any polyester item with visible sweat staining, workout use, or persistent odour, pretreatment before the wash cycle is essential rather than optional. Apply an enzymatic stain remover to the high-contact areas — underarms, collar, cuffs — and work it in lightly. An enzymatic formula breaks down the protein-based components of sweat and the lipid-based components of body oil, which allows the wash cycle to flush them away.

Alternatively, a solution of mild soap, water, and a splash of white vinegar applied to problem areas and allowed to sit for ten to fifteen minutes achieves a similar result. The dwell time matters — applying and immediately washing defeats the purpose.

Washing Settings

Most polyester clothing does well in cool to warm water. If odour is a genuine issue, a warmer temperature helps dissolve and release oil-based residue more effectively, provided the care label permits it. For heat-sensitive polyester — anything with bonded construction, stretch panels, or printed graphics — cool water is safer.

Use the permanent press cycle rather than a regular wash cycle. Permanent press is designed for synthetic fabrics and uses reduced agitation and a cool-down rinse to minimise wrinkling. It is also gentler on elastic, graphics, and performance coatings.

Skip fabric softener. This is important. Fabric softener deposits a waxy coating on synthetic fibres that reduces static but progressively traps oil and odour, worsening the problem with every wash.

Drying Polyester

Polyester dries faster than cotton, which means it is easy to overdo the dryer cycle. Set a low heat, check it early, and remove items as soon as they are dry. Overdrying causes wrinkling that can be difficult to fully remove, and high heat over time degrades elastic, cracks printed graphics, and can deform bonded constructions.

Air drying is the most reliable option for anything with stretch panels or intricate prints.

The Laundry Brothers offers wash & fold and dry cleaning pickup across Greater Vancouver, seven days a week. See service areas →