How to Sew Viscose/Rayon: A Complete Fabric Guide

When I think of viscose, I think of summer dresses that flow in the breeze and blouses that look effortlessly elegant. It's the kind of fabric that photographs beautifully and feels incredible to wear. I've also thought some pretty unkind things about it while chasing a slippery cut edge across my cutting table.

Here's the truth: viscose and rayon can be tricky to sew, but they are absolutely worth the effort. Once you understand how this fabric behaves, you'll wonder why you were ever intimidated by it. I recently made a flowy midi dress from a black viscose challis and it's become one of my most-worn makes. That project reminded me it was time to write up everything I've learned about sewing with this fabric.

A Little Background on Viscose and Rayon

Viscose and rayon are often used interchangeably because they're essentially the same thing. Rayon is the broader term used in the United States, while viscose is the term more commonly used in the UK and Europe. Both refer to a semi-synthetic fiber made from cellulose (usually wood pulp) that's been chemically processed into a silky, breathable textile.

Because it's derived from natural plant material, viscose has a lot in common with cotton and linen: it's breathable, moisture-absorbent, and biodegradable. But thanks to its processing, it has a smooth, almost silky hand-feel and beautiful drape that makes it popular for flowing garments.

Common types you'll come across include:

• Viscose challis — lightweight and drapey, ideal for dresses and blouses

• Viscose jersey — a knit version with stretch, great for t-shirts and wrap dresses

• Bamboo viscose — exceptionally soft, often used for activewear and loungewear

• Modal — a finer, more durable form of rayon, often used in underwear and base layers

• Lyocell (Tencel) — a more eco-friendly variant with a slightly crisper hand

Preparation and Care

Viscose shrinks — sometimes dramatically. Prewashing is non-negotiable before you cut a single piece.

Wash on a gentle or delicate cycle in cool water. Avoid hot water and high heat in the dryer, as both will cause significant shrinkage and can distort the weave. Either hang the fabric to dry or tumble dry on the lowest possible setting. If you're worried about further shrinkage in the finished garment, repeat the wash and dry cycle once more before cutting.

One thing to be aware of: viscose can lose strength when wet. Handle it gently when it's damp. Pulling or wringing it can distort the grain and stretch the fabric out of shape.

After washing, press with a medium-heat iron on the wrong side of the fabric. Use a press cloth if you're at all unsure. High heat can damage viscose, so always test on a scrap first.

For ongoing care, hand washing or the gentle machine cycle in cool water is best. Lay flat or hang to dry. Some viscose fabrics are labeled dry-clean only. Check the bolt before you buy if launderability matters to you.

Layout, Marking, and Cutting Tips

This is where viscose gets its bad reputation. Cutting slippery fabric accurately takes some preparation, but it's completely manageable with a few tricks.

Before you cut: Starch or starch spray can be your best friend here. Lightly starching the fabric before cutting stiffens it just enough to stop it shifting. You can also layer it on top of a sheet of tissue paper or pattern paper. The paper grips the cutting surface and stops the fabric from sliding.

Use weights, not pins: Pattern weights are more reliable than pins on slippery fabric. If you do use pins, silk pins or fine glass-head pins cause less distortion.

Cut on a single layer: Trying to cut two layers of viscose simultaneously is a recipe for misaligned pieces. Take your time and cut one layer at a time.

Use sharp scissors or a fresh rotary blade: Dull blades drag and distort the fabric. A sharp rotary cutter with a fresh blade is ideal for long, clean cuts. Microserrated scissors also work well on slippery fabrics.

Mark carefully: A fine chalk pencil, tailor's chalk, or chalk wheel works well. Avoid water-soluble markers on viscose — they can leave marks that are difficult to remove completely, especially on dark fabrics.

Sewing Machine Setup

Sewing Tips for Viscose

Stabilize the seams. Viscose is prone to stretching on the bias and along shoulder seams. Stay-stitch curved necklines and armholes immediately after cutting, before they have a chance to distort. You can also use a narrow strip of fusible interfacing along shoulder seams to prevent them from drooping over time.

Handle it gently as you sew. Don't pull or tug the fabric as it feeds through the machine. Let the feed dogs do the work. Pulling can distort the grain and cause wavy seams.

Reduce puckering at seams. Puckered seams are a common complaint with viscose. A few things help: a shorter stitch length, reducing tension slightly, using a fine needle, and sewing over a piece of tissue paper that you tear away afterward. The tissue paper stabilizes the fabric as you sew.

Finish your seams. Viscose frays readily. A serger is ideal, but a tight zigzag or overcast stitch works well too. French seams are a beautiful choice for lightweight viscose blouses and dresses. They enclose the raw edges completely and give a clean, couture finish.

Hemming. The narrow rolled hem is a classic finish for viscose dresses and skirts and shows off the drape beautifully. A hand-stitched blind hem is also lovely. If you're using a regular machine hem, interface the hem allowance lightly to prevent a visible ridge showing through to the right side.

Pressing. Press seams with a medium-heat iron and a press cloth. Pressing from the wrong side is best. Steam can help ease any puckers, but too much moisture can distort the fabric, so use it carefully.

Recommended Projects

Viscose is at its best in draped, flowy garments. Wrap dresses, flowy midi skirts, relaxed blouses, wide-leg trousers, and lightweight summer dresses are all ideal. It's also lovely for scarves and lightweight linings.

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Because of its tendency to stretch and fray, I wouldn't recommend viscose as a beginner's fabric, but if you've made a few garments and are feeling ready to try something new, it's an absolutely gorgeous step up. The finished results genuinely look expensive, and you'll wear those pieces again and again.

One more tip: if you fall in love with the look of viscose but want something slightly easier to handle, try viscose challis with a subtle print. Prints disguise the slight grain imperfections that are almost inevitable with slippery fabrics, and challis has a slightly more forgiving hand than very lightweight plain-weave viscose. It's a great place to start.

Have you sewn with viscose or rayon before? Drop your tips and questions in the comments. I'd love to hear about your projects!