How to Sew a Scrunchie

Why the Tube Geometry Matters More Than the Stitch

This project is really a ratio problem. A 20 inch (50 cm) strip gathered onto 9 inches (23 cm) of elastic compresses to a bit under half its length, and all of that extra fabric has to go somewhere: into the folds that make a scrunchie look like a scrunchie. The 3/8 inch (1 cm) seam is part of that arithmetic. It eats into the width of the tube, so a seam sewn wider than 3/8 inch (1 cm) leaves a narrower casing and less fabric left to gather, and the finished band looks thin and flat no matter how far you stretch it.

The long seam is also the reason the pressing step exists. After turning, the tube is a flat ribbon with a seam running down one face. Press that seam so it sits down the middle of the back and the tube lies flat and even along its whole length. Skip it and the seam ridge becomes one stiff line that gathers bunch up against, which is why some finished scrunchies look corded rather than soft.

Closing one short end before turning is not just tidiness. It gives the safety pin a defined wall to push against, and it means the visible end of the finished band is a rounded, finished edge rather than an opening. That is also why both ends of the long seam are backstitched: the closed end takes the full push of turning and the pull of threading, and a seam that gives way there leaves a hole right where you cannot hide it.

Mistakes You Can See in the Finished Scrunchie, and How to Fix Them

Twisted elastic is the most common failure and it shows immediately: the band wants to roll over on itself and the folds spiral instead of sitting in neat rings. It happens when the elastic rotates as it is fed through the tube. The prevention is a ten-second check. Before you overlap the ends, run the elastic all the way around the tube once and smooth it flat against the fabric, then overlap and stitch without letting go of the tail. If a twist survives to the end there is no clever fix: unpick the 1 inch (2.5 cm) overlap, straighten the elastic, and stitch it again.

Uneven gathers usually start with a tube that was never pressed, and get worse when the fabric is pushed along the elastic in one direction only. You can rescue a finished scrunchie by holding the join in one hand and working the fabric around the whole band with the other, sliding folds back and forth until they even out along the elastic. This is exactly what the final stretch-and-check step is for.

A split seam at the closed end means the backstitching was missed, or the corner was clipped so deeply that the blade cut into the stitch line. Re-sew the end by hand with a few small stitches that catch the seam allowance, then clip the corner again, stopping short of the stitches. A slightly bulkier corner is invisible inside the band; a hole is not.

A lumpy join is nearly always a ladder stitch that was cinched tight like a running stitch. A ladder stitch should be snugged stitch by stitch, not pulled hard at the end, and it helps to check that the 1/2 inch (1.3 cm) tuck is even all the way round before pinning. If you close the join on the machine instead, stitch close to the fold but not on top of it, so the raw edge stays tucked inside.

Fabric, Elastic, and Thread: What Each Substitution Changes

The fabric decides the shape of the folds. A knit or a soft cotton, as the materials list suggests, folds into soft, rounded pleats. Stiff quilting cotton resists bending and folds into angular creases, so the band reads as crushed rather than gathered, using the same amount of fabric for a completely different look. Slippery fabrics such as satin and chiffon make the most luxurious scrunchie but fray as you handle them, so cut them with the rotary cutter and finish the long seam with a narrow zigzag rather than a plain straight stitch.

Elastic length changes the fit more than the fabric does. The 9 inch (23 cm) piece is a little under half the length of the strip, and that is what creates the gather. Shorten it and the band grips harder but can leave a dent in fine hair; lengthen it and the band goes slack after a few wears. Whatever length you settle on, remember that every extra inch of elastic is one less inch of gathering.

The thread matters at exactly one place: the elastic overlap. Polyester thread, which the materials list calls for, has some give and moves with the elastic. Cotton thread has none, and a cotton join is the usual reason a scrunchie pops apart at the back months later. That overlap carries the entire stretch of the band, which is why the instructions say to sew it twice.

Tool choices show up in the join. Cut the strip with a rotary cutter and ruler and both short ends are square, so the folded end slides neatly over the raw end and the closing line runs straight. Cut with scissors and the ends skew, the band sits slightly twisted on the head, and the join wanders as you pin it. A safety pin is enough to turn and thread the tube, though a bodkin or a large blunt tapestry needle makes the threading quicker.

Variations: Fullness, Size, and Sewing by Hand

To change the look without changing the method, keep the 20 inch (50 cm) length and alter only the width. The 3 inch (8 cm) version makes a thin everyday band, 4 inches (10 cm) is the standard used here, and anything wider gives a rounder, more vintage scrunchie. Because the seam allowance stays at 3/8 inch (1 cm), a wider strip leaves more fabric in the folds, so a fuller band comes from the cut rather than from packing the tube.

For thick hair or a bun wrap, cut the strip longer than 20 inches (50 cm) and lengthen the elastic to match, keeping the same proportion so the band still gathers to roughly half its flat length. Keep the width unchanged and you get a scrunchie that wraps twice around a bun without being stretched to its limit.

No machine is no problem. Backstitch the long seam and the closed short end by hand, keeping the stitches small and even, then close the join with a ladder stitch. The hand-sewn version takes considerably longer than the machine route, but the tube turns and gathers exactly the same way, and a backstitch worked at a steady tension has more give than a tight machine straight stitch.

Two scrappy variations worth trying with leftover strip ends: piece the strip from two contrasting fabrics, sewn end to end and pressed before folding, and accept that the join reads as one thicker fold in the gathers; or stitch a small bow or fabric knot over the closing seam, which hides a slightly imperfect ladder stitch. Both use fabric you already have, and neither changes the measurements.

Finishing, Washing, and Making the Elastic Last

The final press sets the folds so they fall in soft rounds instead of springing back flat, but keep the iron off the elastic itself. Polyester elastic loses its recovery when it takes direct heat, so press the fabric before threading, and once the band is finished press it lightly, working around the band rather than pressing down on the elastic.

The overlap is the stress point of the whole scrunchie. It holds every bit of the stretch, and when a scrunchie eventually goes slack it is almost always that 1 inch (2.5 cm) join letting go or the elastic itself losing recovery. The long seam rarely fails. That is the reason for sewing the overlap twice rather than once.

To keep a scrunchie looking new, wash it in a mesh bag in cold water and let it air dry flat. The dryer is what kills them: heat and tumbling break down elastic recovery and leave the band floppy. Detergent residue does the same over time, so a short extra rinse after washing helps.

If the elastic does give out, the scrunchie is repairable rather than disposable. Open the closing seam, a few stitches if you used a ladder stitch or a pass with a seam ripper if it was machine-sewn, pull out the old elastic, thread a fresh 9 inch (23 cm) piece, and close it the same way. Keeping the closing seam on the outside of the band is what makes that possible.