What a Garment Wash Is and Why Brands Use One
A garment wash is a treatment applied to a finished garment, after it has been sewn, in a large industrial washing machine. The garments tumble in water with chemicals or sometimes abrasive agents, and the process changes how they feel and look. Brands use a garment wash to give a softer hand feel, to pre-shrink a garment, to create a faded or vintage look or to reduce loose surface fibres that cause pilling.
Washing is well known in denim, but it matters just as much for jersey and fleece. A cotton tee or hoodie can come off the sewing line stiff, slightly hairy and still able to shrink. A garment wash is the step that turns it into the soft, settled product the customer expects. It adds a stage, however, and that stage brings cost, water use, lead time and risk, so it is worth choosing deliberately.
Denim uses many of the same ideas, and our guide to types of denim washes shows the heavier end of the range. This page focuses on jersey and fleece.
Enzyme Wash and Bio-Polishing
An enzyme wash uses enzymes, most often cellulase, to break down the tiny fibre ends that stick out from the surface of cotton and other cellulose fabrics. This process is also called bio-polishing. Removing those loose fibres gives a smoother surface, a softer hand feel and less tendency to form pills later. It also gives a slightly cleaner look to the fabric.
The result depends on the time, temperature and enzyme concentration, and a stronger treatment can weaken the fabric or reduce its weight. It works only on cellulose fibres, so it is suited to cotton and viscose but has little effect on polyester. For the causes of surface fuzzing, see our guide to fabric pilling causes and prevention.
Silicone Softener and Hand Feel Finishes
A softener is added at the end of a wash to give the garment a smooth, slippery handle. Silicone softeners are common because they give a very soft feel to cotton and blends. The treatment coats the fibre surface and reduces friction between fibres, so the fabric feels smoother and drapes better.
The softness comes with trade-offs. Softeners can reduce the absorbency of the fabric, can affect how well a print adheres and may wash out partly over time. If you plan to apply a print or an embroidery after the wash, check the effect on adhesion, or print before washing where the process allows. Always ask what softener is used, and whether it meets the chemical requirements of your retailers.
Stone Wash, Acid Wash and Faded Effects on Jersey
Stone washing tumbles the garments with pumice stones, which abrade the surface and fade the colour in patches. On jersey and fleece it gives a lived-in, vintage look. Acid washing is a related effect that creates a mottled, high-contrast look, traditionally by treating pumice with chemicals and tumbling it with the garments. Both are strongly associated with retro and streetwear styles.
These are rougher processes than an enzyme or softener wash, and they reduce fabric strength and can cause variation between garments. Each piece looks slightly different, which is part of the appeal but also needs an agreed standard. For a deeper look at faded hoodies, read our guide to pigment and acid washed hoodies.
Garment wash types for jersey and fleece
| Wash | What it does | Best for | Watch for |
|---|---|---|---|
| Plain wash | Removes size and relaxes the fabric | Basic softening and pre-shrink | Limited effect on surface fuzz |
| Enzyme wash | Removes loose cotton fibres from the surface | Smooth hand feel, less pilling | Strength loss if overdone, cotton only |
| Silicone softener | Coats fibres for a slippery, soft feel | Very soft handle on cotton and blends | Can reduce absorbency and print adhesion |
| Stone wash | Abrades the surface with pumice | Vintage, faded look | Strength loss and garment variation |
| Acid wash | Creates a mottled, high-contrast fade | Retro and streetwear looks | Strong variation between garments |
A general comparison. Names and methods vary by washing unit, so always confirm the process on a sample.
How a Wash Changes Shrinkage, Fit and Measurements
Washing relaxes the fabric, and relaxed fabric shrinks. A garment washed at the factory is partly pre-shrunk, so it should change less when the customer washes it. That does not mean it will not shrink at all, and the remaining change depends on the fabric, the wash and the care instructions. Length often changes more than width, and knit garments can twist.
Because a wash changes measurements, patterns must allow for it. A garment cut to final size and then washed will come out smaller. Factories include a shrinkage allowance in the pattern or cut slightly larger, and the allowance should be confirmed on a washed pre-production sample. Our guide to garment testing explains how to test dimensional change, and the hoodie shrinkage and twisting guide shows how to reduce surprises.
How much a wash tends to change the garment (illustrative)
Relative strength, schematic
A schematic of relative strength of effect on surface and appearance, from none (0) to strongest (100). A teaching diagram, not a measurement.
Colour, Dye and Shade Effects of a Wash
A wash can change colour. Enzyme and softener washes mostly leave colour as it was, but heavier abrasion removes dye from the surface, which lightens the shade and creates contrast at seams and edges. Dark colours show this most. Garment-dyed and pigment-dyed pieces are often washed on purpose to produce a soft, faded look.
Consistency is the main risk. Washing units change the effect slightly between loads, so garments from different machines can differ. Agree a standard wash sample, called a master, and a tolerance for variation. If shade matters across a whole order, wash garments in lots from the same fabric batch and compare against the master. The guide to fabric dyeing methods shows how dye choice interacts with washing.
Cost, Lead Time and Water Use
A garment wash adds cost and time. The garments need to be washed, extracted, dried and finished before they move to final packing. Heavier washes take longer and use more water, chemicals and energy. Water use is a growing concern for retailers and customers, so ask the factory how it treats and reuses water, and consider whether a lighter wash would give the look you want.
We do not quote prices here, because cost depends on the process, the garment weight and the quantity. As a rule, a plain wash costs less than an enzyme or softener wash, and heavy stone or acid effects usually cost more again. Standards bodies such as ZDHC Foundation publish guidance on chemical management in textile production, and it is worth asking how a factory manages the chemicals it uses in washing.
Illustrative split of a wash cycle by purpose
Placeholder split, not data
- Cleaning and rinsing40%
- Treatment such as enzyme or softener30%
- Extraction and drying20%
- Handling10%
An illustration with placeholder percentages to show that treatment is only one part of a wash cycle. It is not measured data and does not describe any factory.
Choosing a Wash by Product
The right wash depends on what you are making. A premium soft tee suits an enzyme wash plus a softener. A heavyweight fleece hoodie may benefit from a lighter wash to keep its structure. A vintage-look streetwear piece may use stone or acid effects. A basic promotional tee may need only a plain wash or none at all, to keep cost down.
How each wash suits typical products
1 dot = low, 5 dots = high
| Premium soft tee | Fleece hoodie | Vintage streetwear | Basic or promotional | |
|---|---|---|---|---|
| Plain wash | ●●●●● | ●●●●● | ●●●●● | ●●●●● |
| Enzyme wash | ●●●●● | ●●●●● | ●●●●● | ●●●●● |
| Silicone softener | ●●●●● | ●●●●● | ●●●●● | ●●●●● |
| Stone wash | ●●●●● | ●●●●● | ●●●●● | ●●●●● |
| Acid wash | ●●●●● | ●●●●● | ●●●●● | ●●●●● |
Indicative ratings based on common use, not measured results.
Choosing and approving a wash
- 1Define the look and feelSoft, faded, plain or crisp
- 2Choose the routeEnzyme, softener, stone or acid
- 3Make a washed sampleCheck feel, colour and measurements
- 4Set the masterAgree the standard and the tolerance
- 5Confirm in bulkCompare a washed bulk piece against the master
A simplified method. Adapt it to your product.
Problems a Garment Wash Can Cause
A wash can solve problems and create new ones. Over-washing can weaken fabric, producing thin patches or holes at seams. Uneven washing can leave streaks or patches, especially on dark colours. Heavy washing can cause colour to bleed onto light panels or trims. Softeners can leave an oily mark if they are not rinsed properly. Most of these problems are visible on a bulk piece, but not always on a single sample, which is why a lot-by-lot check is useful.
Wash problems and how to prevent them
| Problem | Likely cause | Prevention |
|---|---|---|
| Thin patches or holes | Treatment too strong or too long | Set time and strength limits on a sample |
| Uneven shade or streaks | Overloaded machine or uneven chemical mix | Agree load size and compare against a master |
| Colour bleeding onto trims | Loose dye transferring in the wash | Test colour fastness and separate light trims |
| Oily marks | Softener not rinsed out | Check rinsing and inspect garments after drying |
| Measurement variation | Different shrinkage between loads | Measure washed garments and set a tolerance |
A general guide to common problems, not an exhaustive list.
Heavier wash vs lighter wash
Heavier wash
- Heavier: stronger vintage or faded look
- Heavier: very soft feel on cotton
- Heavier: each garment looks one of a kind
Lighter wash
- Lighter: less strength loss and less variation
- Lighter: lower cost and less water used
- Lighter: easier to repeat on reorder
A general comparison. The right level depends on the look, the fabric and the budget.
A Checklist for Specifying a Garment Wash
A wash needs a written specification, because the words soft or vintage mean different things to different people. Describe the effect and attach a physical master. The checklist below covers the points to confirm.
Garment wash checklist
- Wash type named, with the effect you want described in words
- A physical master sample approved and kept by both sides
- Shrinkage allowance in the pattern confirmed on a washed sample
- Tolerance for shade and measurement variation between garments
- Effect of the wash on prints, embroidery and trims checked
- Chemicals used and any retailer restrictions confirmed
- Care label instruction tested after the factory wash
- Water treatment and wash location confirmed with the factory
A general list. Add anything your retailer requires.
How Ruhrose Handles Garment Washes
Ruhrose develops hoodies, fleece, jersey, denim and woven casualwear with production in Bangladesh and UK buyer support. We discuss the look and feel you want, suggest a wash route to test, make a washed sample and agree the standard before bulk. We do not publish prices or minimums here, because they depend on the wash, garment and quantity. The OEKO-TEX provides standards for testing textiles for harmful substances. To discuss a style, visit Ruhrose and send a reference garment.