What Is Viscose Fabric? Viscose vs Rayon Explained

What viscose fabric is, how it is made from wood pulp, viscose vs rayon, modal, cotton and polyester, why it shrinks, bamboo viscose labeling, sustainability questions and how to specify viscose for a factory.

The Short Answer

Viscose is a soft, drapey, semi-synthetic fabric made from regenerated cellulose, usually from wood pulp. Viscose and rayon are closely related terms: rayon is the US generic name for regenerated cellulose fiber, and viscose is both the most common production process and the name used for the fiber in Europe and much of the world. In most apparel conversations, a viscose dress and a rayon dress are the same kind of garment.

For a brand, viscose is a trade-off. It gives a fluid drape, a cool hand and strong color at a moderate fiber cost. It also loses strength when wet, can shrink more than buyers expect and needs careful handling through cutting and sewing. This guide explains how viscose is made, how it compares with rayon, modal, cotton and polyester, why it shrinks, and how to specify it for a factory.

What Is Viscose Made Of?

Viscose starts as dissolving pulp, a purified form of cellulose. The pulp usually comes from wood, and it can also come from other plants such as bamboo. The cellulose is dissolved and then re-formed into fiber, so the plant structure does not survive into the finished yarn.

That is why viscose sits between the two usual fiber categories. Its raw material is natural, but the fiber is manufactured. It is not a natural fiber like cotton or linen, and it is not an oil-based synthetic like polyester. The usual labels are semi-synthetic, man-made cellulosic or regenerated cellulose.

Viscose vs Rayon: Are They the Same?

This is the most common question about the fiber, and the confusion is mainly about language.

Rayon is the broad name. US textile rules define rayon as a manufactured fiber composed of regenerated cellulose. Viscose, modal and related fibers fall inside that definition.

Viscose is the name of the original chemical process and the standard name for the fiber it produces. It is the word most often seen on labels in Europe and on international fabric offers.

Viscose rayon is simply a longer name for the same thing.

The fiber was developed in Britain in the 1890s and sold for years as artificial silk. The name rayon was adopted in the United States in the 1920s. So when a mill quotes viscose and a US buyer asks for rayon, they are usually talking about the same fabric. What matters more is the exact fiber type, because modal and lyocell are also regenerated cellulose but behave differently.

How Viscose Is Made

The viscose process has several chemical stages:

Steeping. Dissolving pulp is treated with sodium hydroxide to form alkali cellulose.

Aging. The alkali cellulose is shredded and held under controlled conditions, which shortens the cellulose chains.

Xanthation. Carbon disulfide converts the cellulose into a compound that can be dissolved.

Dissolving. The compound is dissolved in dilute sodium hydroxide into the thick, honey-like solution that gave viscose its name.

Spinning. The solution is pushed through fine holes into an acid bath, where cellulose re-forms as filament.

Finishing. The filament is washed and bleached or left as it is. Most is cut into staple fiber and spun into yarn, and some is sold as continuous filament.

Those steps explain most of the fabric's behavior. The cellulose chains are shorter than in cotton, and the fiber structure is less ordered, which is why regular viscose feels soft and takes dye well, and also why it is weaker when wet.

Properties of Viscose Fabric

Drape. Viscose hangs fluidly, which suits dresses, blouses and wide trousers. It does not hold a structured shape on its own.

Soft, cool hand. The smooth fiber feels cool against the skin, and it is often used as a lower-cost alternative to silk-like wovens.

Absorbent and breathable. Viscose takes up moisture readily and is generally comfortable in warm weather. A tight or heavy fabric will still feel warmer than an open, light one.

Strong color. It takes dye well and gives saturated, clear shades.

Weak when wet. Regular viscose loses a large part of its strength when wet. This affects dyeing, garment washing and home laundering.

Creasing. It wrinkles more easily than polyester and many cotton fabrics, especially in plain woven constructions.

Limited stretch. The fiber has little natural elasticity. Viscose fabric stretches only when it is knitted or blended with elastane.

Viscose vs Modal, Cotton and Polyester

Viscose vs Modal

Both are regenerated cellulose made by a related process. Modal is processed for higher wet strength, so it tends to hold its shape and softness better through repeated washing. Viscose is usually lower in cost and more common in woven fashion fabrics. Modal is the stronger fit for garments washed often, while viscose can be enough for a dress or blouse washed occasionally. Our modal fabric guide covers the comparison in detail, along with Tencel and lyocell.

Viscose vs Cotton

Viscose drapes more, feels smoother and shows color with more luster. Cotton has more body, handles repeated hot washing better and is stronger when wet. A cotton fabric is usually the easier choice for a garment that needs structure or frequent washing. Viscose is the better choice when movement and a fluid hand are the point of the design. The two are also blended, which gives some of the softness with more body than pure viscose.

Viscose vs Polyester

Polyester is an oil-based synthetic. It resists creasing, dries quickly, holds its shape and costs little, but it absorbs little moisture and can feel warm in hot weather. Viscose feels cooler and more natural, but it creases, shrinks more and needs gentler care. Polyester-viscose blends are common because they trade some softness for better durability and easier care.

Common Viscose Fabrics

Viscose is a fiber, not a construction, so the name on its own does not tell a factory what fabric you want. Common types include:

Viscose challis. A light, soft plain weave used for printed dresses, blouses and skirts. It is often sold as rayon challis.

Viscose crepe. A textured fabric made with high-twist yarns, used for dresses and tailored tops. It can shrink noticeably when wet.

Viscose twill and satin. Fluid wovens used for shirts, dresses and trousers, with a smoother surface and more sheen.

Viscose poplin. A finer, cleaner weave used for shirts and summer dresses.

Viscose linen blends. Used for summer shirts and trousers, adding softness to a linen look.

Viscose jersey. A knit used for dresses, tops and loungewear, often with elastane. Our guide to jersey fabric explains construction and common faults. The knit vs woven guide covers how that choice affects a garment.

Does Viscose Shrink?

Yes, and often more than buyers expect. Viscose swells when wet, and the fiber is weak in that state, so agitation and heat can leave a garment smaller or distorted. Loose wovens and high-twist crepes are usually the most exposed, and a fabric that has not been relaxed or finished properly will move far more than a stabilized one.

The result depends on the construction, the finish and the care, so treat shrinkage as a specification item and not a fiber fact. Set a maximum dimensional change, name the test method and test the bulk fabric, not only the sample. A garment wash adds another variable, as our guide to enzyme and garment washing explains. The test logic in our pre-shrunk cotton guide applies here as well.

Care instructions should come from testing. Writing "dry clean only" does not solve a stability problem, and in the US a care label needs a reasonable basis under the FTC Care Labeling Rule. If the garment is meant to be machine washed, the fabric should be developed and tested for that.

Is Viscose Sustainable?

It depends on the producer and cannot be answered from the fiber name. Viscose starts from a renewable raw material and is biodegradable under suitable conditions, but two issues need attention.

Pulp sourcing. Wood pulp can come from well-managed sources or from sensitive forests. Canopy's CanopyStyle initiative focuses on this risk, and forest certification such as FSC or PEFC can support pulp sourcing claims.

Chemical management. The process uses carbon disulfide and other hazardous chemicals. Emissions, wastewater and worker exposure depend on how the plant is run. The ZDHC guidelines for man-made cellulosic fibers set out one framework for assessing this.

Branded fibers such as LENZING ECOVERO and Birla Livaeco are marketed around traceability and lower-impact production. If a brand wants to use those names, it needs documentation from the supply chain and should check the fiber producer's licensing or approval rules first.

Useful questions for a mill include who produced the fiber, whether the pulp is traceable, and whether the finished fabric is certified to OEKO-TEX or another harmful-substance standard. If the product is positioned as organic, check whether the blend meets the rules in our GOTS certification guide. Avoid broad claims such as "eco-friendly" unless you can substantiate them.

What Is Bamboo Viscose?

Bamboo viscose is viscose made from bamboo pulp. Once bamboo has been dissolved and re-formed, the result is regenerated cellulose, so it is not a bamboo fiber in the way that linen is a flax fiber. In the US, this has become a real compliance issue. The FTC has taken repeated action against retailers over rayon textiles marketed as bamboo, including settlements with Kohl's and Walmart in 2022 that totaled $5.5 million.

Do not label or advertise this fabric simply as "bamboo", and do not assume the mill's trade description is safe to reuse. Get the exact wording approved by a compliance adviser before labels and product pages are finished.

Common Production Issues With Viscose

Shrinkage in wet processes. Fabric that moves in dyeing, washing or pressing can throw off the size chart. Test before cutting bulk.

Fabric movement during cutting. Light, fluid wovens shift on the table. They need relaxing before spreading, and sometimes slower cutting or paper layers.

Seam slippage. Yarns in smooth, light wovens can pull apart at seams under stress. Fitted styles need testing at the stress points.

Hem drop. Bias-cut skirts and dresses can drop unevenly after hanging. Allow hanging time before the hem is finished.

Press marks and shine. High heat can mark the surface, particularly on dark colors and smooth fabrics. Agree on a press test.

Creasing in transit. Folded garments can arrive creased, so packing method and the steaming plan should be decided early.

Shade variation. Blends dye differently from pure viscose, and prints can vary between lots. Approve lab dips or strike-offs on the actual base. Our guide to garment dyed vs piece dyed explains why this happens.

Wrong fiber content. Routine fiber tests may not reliably separate viscose from modal, so ask for mill or yarn documentation as well as a test report.

How to Specify Viscose Fabric for a Factory

"Soft rayon dress" is not a specification. A useful tech pack line covers:

Exact composition. The percentage of each fiber, and the fiber producer if it matters to your claims.

Construction. Challis, crepe, twill, satin, poplin or jersey, with yarn count and fabric density where they matter.

Fabric weight. State the finished GSM with a tolerance.

Dyeing or printing. Reactive dye, digital print or other route, plus a color or strike-off standard.

Finish. Any softener, anti-crease or stabilizing finish, and any garment wash.

Dimensional stability. Maximum change after washing, tested to AATCC 135 or ISO 6330 and ISO 5077.

Colorfastness. Requirements for washing, rubbing and light. Our guide to colorfastness covers methods such as AATCC 61 and ISO 105-C06.

Seam strength. For wovens, test seam slippage to ASTM D1683 or ISO 13936, especially on fitted styles.

Fiber content. Use AATCC 20A or ISO 1833 where a report is needed, with the limits noted above in mind.

Care instructions. Decide these from testing, and keep them consistent with the label.

Agree acceptance limits with the factory before bulk. Then write them into the order and check them at inspection, as covered in our guide to AQL sampling.

Labeling, Flammability and Customs

Under the FTC's Textile Rules, rayon is a generic fiber name for regenerated cellulose, and the rules also recognize the generic names in ISO 2076:2013, the international list for man-made fibers. Confirm the exact fiber wording, along with the care and country-of-origin details, with a compliance adviser before labels are printed.

Apparel sold in the US must also meet the flammability standard at 16 CFR Part 1610, so ask your adviser whether a light or brushed viscose fabric needs testing. For duties, classification depends on the garment and its fiber content, and a viscose garment may not fall under the same tariff line as its cotton version. Ask a customs broker to confirm this before you compare landed costs.

MOQ and Cost Factors

Viscose programs depend on the fabric as much as the garment. Factors that affect minimums and cost include:

Fabric availability. Stock qualities are easier to start with than a custom weave.

Printing or dyeing. Dye house and print minimums apply per color or design.

Fiber source. Branded and certified fibers are usually priced above unbranded equivalents, and may add lead time.

Finishing and washing. Stabilizing finishes and garment washes add steps.

Handling. Slippery fabrics can slow cutting and sewing, which affects sewing cost.

Actual minimums and prices vary by factory and quality, so they should be confirmed in a written quote. Comparing quotes only works when composition, construction, GSM and finish are the same on each one.

Sourcing Viscose Garments in Turkey

Turkey has a large weaving, knitting, dyeing and finishing base serving apparel brands, and its garment manufacturers regularly produce dresses, blouses and knit tops. Which viscose qualities a factory can source, and whether they come from stock or through a partner mill, vary by factory, so they should be confirmed at the quote stage along with documentation of the fiber source.

SourceBridge responds to a textile brief within 24 hours with options from 2–3 pre-vetted Turkish factories. The published starting point for textiles is 300 units per style. Samples typically take 7–14 days, plus 5–7 days for international courier, and production typically runs 4–8 weeks depending on product complexity, with a pre-shipment inspection against the approved sample before goods leave the factory. Our guides on how to find a clothing manufacturer and clothing manufacturers for startups cover the steps before and after the specification.

FAQ: Viscose Fabric

What is viscose fabric?

Viscose is a soft, drapey semi-synthetic fabric made from regenerated cellulose, usually from wood pulp. The cellulose is dissolved and re-formed into fiber. It is widely used for dresses, blouses, linings and knit tops.

Is viscose the same as rayon?

In most apparel use, yes. Rayon is the US generic name for regenerated cellulose fiber, and viscose is the most common type and the usual name in Europe. Modal and lyocell also fall under the wider rayon family but behave differently.

Is viscose a natural fiber?

No. Viscose starts from natural cellulose, but that cellulose is dissolved and re-formed in an industrial process. It is usually called semi-synthetic or man-made cellulosic, and it is not an oil-based synthetic like polyester.

Does viscose shrink?

Yes, it can, particularly in water and heat, and loose wovens and crepes are often the most exposed. Shrinkage depends on construction, finish and care. Set a maximum dimensional change and test the bulk fabric.

Is viscose breathable?

Generally yes. Viscose absorbs moisture and feels cool, so it is comfortable in warm weather, particularly in light fabrics. The weight and construction of the fabric matter as much as the fiber.

Is viscose stretchy?

Not much on its own. Woven viscose has little stretch unless elastane is added. Viscose jersey has stretch from its knit structure, and it is often blended with elastane for better recovery.

Is viscose better than cotton?

Neither is better in every case. Viscose drapes more and feels smoother, while cotton has more body, is stronger when wet and tolerates repeated washing better. The right choice depends on the garment.

Is viscose sustainable?

It depends on the producer. The raw material is renewable, but pulp sourcing and chemical management vary. Ask for fiber producer documentation, and avoid broad environmental claims unless you can substantiate them.

What is bamboo viscose?

Bamboo viscose is viscose made from bamboo pulp. It is regenerated cellulose and not a bamboo fiber in the usual sense. In the US, the FTC has acted against rayon textiles marketed as bamboo, so confirm label wording with a compliance adviser.

What Is Viscose Fabric? Viscose vs Rayon, Modal and Cotton