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Polyester, nylon, acrylic, rayon: with so many clothes now made of these fabrics, it’s good to know how a synthetics wash works. Find out more here.

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A pile of folded floral synthetic sheets.

Fabric Care Guide: How to Remove Stains and Wash Synthetics

Synthetic fabrics are a part of everyday life. When you put on your sheer nylon tights, your snazzy acrylic-blend jumper, or your sweat-wicking polyester gym wear, you’re wearing the contents of your synthetic wash load – although hopefully not all at once. If there’s a job natural fibres like wool or cotton can’t quite get done, people have created something that fits the bill perfectly. 

So, how do you take care of this varied range of fabrics? How do you go about washing and removing stains from polyester, or rayon, or nylon? Here are the basics.


What is a synthetics wash?

There are a lot of different types of synthetic fabrics available, and they’re often blended with wool, cotton or other synthetic fabrics in different garments. Synthetic fabrics tend to react to a wash in a similar way, though, so if your garment is machine-washable, chances are you’ll need to use the synthetics cycle on your washing machine to clean it. 

Because most synthetic fabrics are derived from plastic, high temperatures can damage or even melt the fibres. The synthetics cycle uses a lower temperature than the average washing machine programme and doesn’t agitate the clothes as much, protecting them from damage.

Key tips to remember when doing a synthetic wash load

  • If in doubt, check the label. If your machine doesn’t have a synthetics setting, don’t worry – the garment care label will always tell you the maximum temperature the item can be washed at. 
  • Think warm, not hot. Heat-sensitive fabrics like synthetics should never be tumble-dried at a high temperature, and you should avoid ironing them. If you do need to press a synthetic fabric, use a cool iron to do it, and lay an old, clean towel between the fabric and the iron to protect it.

How to remove stains from polyester, acrylic, and other synthetics

Spilled something disastrous? No sweat – removing stains from polyester and its fellow synthetic fabrics is often an easy job. How you react will depend a little on the stain itself, but it’s important to make sure your method is kind to the fabric too. Here’s what you need to know.


Because acrylic can be spun into fibres that look and feel like several different types of fabric, you’ll find it in a lot of different types of clothing – it’s often blended with wool in jumpers, for example, or used to make microfiber fleeces, towels or cleaning cloths.

How to wash acrylic and remove stains

Like most synthetics, acrylic is sensitive to heat, so make sure to wash it on a cool or warm cycle rather than using hot water. Any tough stains can be treated with a high-quality detergent like Persil bio liquid. You can find out more in our guide on how to wash acrylic and blended acrylic fabrics


Depending on how it’s treated during manufacturing, polyester fibres can be used to make anything from the smooth fabrics used in gym clothing to fluffier, denser fabrics. As well as clothing, polyester is used for things like pillow and duvet stuffing, and even to make carpets!

How to remove stains from polyester

Many synthetic fabrics – polyester included – show up oily and greasy stains in particular, so you might find yourself wondering how to remove grease stains from polyester at one point or another. The good news is that this is actually quite easy – polyester is an easy fabric to care for. Wash on a warm (not hot!) cycle, and pre-treat any stains with Persil bio liquid. You could also treat grease or oil stains with dishwashing soap.


Often used to make soft, silky fabrics, nylon is frequently found in tights and other kinds of lingerie. Because it’s also very durable and waterproof, however, it’s also used in the production of things like seatbelts, umbrellas, and even fishing lines!

How to remove stains and wash nylon

Wash your nylon garments in the machine on a synthetic wash, pre-treating any stains with Persil liquid. If you’re washing something delicate, like underwear, it might be a good idea to put garments in a mesh bag before washing to keep them from snagging on the inside of the machine.


Rayon is actually the name given to a group of fabrics, including things like viscose and the newly-popular modal. It’s slightly different to other synthetic fabrics in that rayons are derived from cellulose, which usually comes from wood pulp – it’s considered a synthetic because of the chemicals the cellulose is treated with in production. 

How to wash rayon

Caring for rayon can be tricky – only certain types of rayon can be washed at home, and some will need to be dry-cleaned, so always check the label. If you can wash your rayon garments, it’s best to hand wash them in lukewarm water with a gentle detergent like Persil Silk & Wool.


That’s it: everything you need to know about washing synthetic fabrics. They’re usually easy to care for, just as long as you remember to stick to warm rather than hot temperatures and always follow the instructions on the label. Remember to ask a professional if you’re ever unsure!

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