How to Steam a Suit or Blazer (Without Ruining the Shape)

To steam a suit, hang the jacket on a shaped hanger, choose a gentle setting for the fabric, and steam from just above the cloth in slow downward strokes: shoulders first, then the back, sleeves, front panels and, lightly, the lapels. Steam the trousers on a hanger too, then press the crease flat with a pressing cloth. Let everything hang and dry for a few minutes before you put it on. Done this way, steam freshens a suit or blazer without flattening the structure that makes it look tailored.

Can you steam a suit jacket?

Yes. Steam is one of the kindest ways to treat a suit jacket. A jacket is built in layers, often with canvas or interfacing in the chest and lapels that gives it shape. A hot iron pressed hard onto the front can flatten that shape, leave shiny patches on wool and press the outline of pockets and seams through to the outside. Steam relaxes wrinkles without that pressure, so the jacket keeps its natural curve.

What steam won't do is build sharp lines. That's why a suit takes two techniques: steam for the jacket, and a careful press for the trouser crease. A handheld steamer and iron does both, so you don't need to drag out an ironing board for one pair of trousers.

Before you start

• Use a shaped hanger. A wide, curved suit hanger fills out the shoulders the way your own shoulders do. A thin wire hanger lets the shoulders sag.
• Check the care label. Most suits are wool or a wool blend, but some are cotton, linen or polyester. If the label says dry clean only, gentle steaming at home is usually fine for everyday wrinkles, but heavy pressing is best left to a professional. If you're unsure, test on the inside of a hem first.
• Empty every pocket. Pens, phones and folded receipts leave lumps and outlines.
• Fill with distilled or filtered water. It keeps mineral deposits out of the steam.

How to steam a suit jacket or blazer, step by step

For wool, choose the Blend setting on the SteamerPro. The FAQ guidance is to steam wool from just above the fabric rather than pressing down, then let it hang. For cotton or linen blazers use Cotton or Linen; for a silk blend or a fine, lightweight blazer, use Silk. If the label says cool iron, start on Silk.

1. Shoulders. Start at the top, where the jacket's shape matters most. Hold the steamer just above the fabric and move it slowly over each shoulder. Don't press the shoulder against the hanger; let the steam do the work.
2. Back. Turn the hanger around and work down the back in long vertical strokes. With your free hand, pull the hem gently downward to keep the fabric taut. Steam moves through smooth, tight fabric more easily than slack fabric.
3. Sleeves. Steam each sleeve from the shoulder down to the cuff, turning it slightly as you go. Sleeves crease at the elbow and inside the arm, so give those spots an extra pass.
4. Front panels. Button the jacket, then steam each front panel from top to bottom, working around the pockets rather than pressing into them.
5. Lapels, lightly. The lapel is meant to roll softly back from the collar, not lie flat like a folded piece of paper. Pass the steam over it from just above and never press the plate onto the roll. If a lapel has a stubborn crease, steam it and smooth it with your hand.

How to steam suit trousers and press the crease

Start the trousers the same way as the jacket: hang them by the hem with the inseams together and steam from the waistband down, pulling the legs gently taut. That removes the creases from sitting. For the front crease, you need a flat surface and some pressure.

1. Lay one leg flat. Put the trousers on their side on a table, match the inseam to the outseam and find the existing crease. Always follow the line that's there, or you'll end up with two.
2. Use a pressing cloth. Dark wool and suiting fabrics can go shiny under direct heat. A see-through mesh pressing cloth goes between the plate and the fabric, and you can still see the crease you're following.
3. Press, lift, move. Turn the steamer flat and press down with the ceramic plate along the crease, then lift and move to the next section. Don't slide it back and forth, which can stretch the fabric and twist the line.
4. Repeat on the other leg, then leave the trousers flat or hanging straight until they cool.

Our guide on how to steam pants goes into more detail on creases, pockets and different trouser fabrics.

The 2-in-1 steamer and iron design is what makes this easy at home or in a hotel room. The PivotPress head turns 90 degrees, so you steam the jacket upright on the hanger, then lay the trousers on any table and press. Because the water is heated inside the body before it reaches the vents, the steam comes out fine and dry, with no drips or water spots on dark suiting.

Let it dry and set before you wear it

This is the step most people skip. Freshly steamed fabric is warm and slightly damp, and it will take on new wrinkles quickly if you put it on or fold it straight away. Leave the jacket on its shaped hanger and the trousers hanging straight for at least a few minutes, longer for heavy wool, until they're cool and dry to the touch. The shoulders settle back into shape and the trouser crease firms up as it cools.

Between wears, give a suit space in the closet so it isn't crushed against other clothes. A garment dust cover over the hanger helps keep dust off a suit you only wear now and then.

Common mistakes when steaming a suit

• Pressing the plate onto the jacket front or lapels. It flattens the chest and the lapel roll and can leave shine on wool. Keep the steam just above the cloth.
• Holding the steam in one spot. The fabric gets damp rather than smooth. Keep the steamer moving and make a second pass instead.
• Using a thin hanger. The shoulders sag while the fabric is warm and set that way as it cools.
• Steaming over a stain. Heat can set it. Have stains treated first.
• Pressing a new trouser crease. Always follow the line that is already there, or you end up with two.
• Putting it on straight away. Warm, slightly damp fabric creases again fast. Give it a few minutes on the hanger.

When to take it to a tailor or dry cleaner

Steam handles everyday travel and closet wrinkles. Some things are better left to a professional:

• Stains. Heat can set them, so have them treated first.
• Bubbling on the chest or lapels. If the fabric looks puckered or separated from the layer underneath, that's a construction issue, not a wrinkle.
• Shine that's already there. Light shine sometimes lifts with steam from above, but heavy shine usually needs a professional.
• A full re-press. If a suit has lost its shape or needs new creases, a tailor or dry cleaner has the equipment to rebuild it.

FAQ

Is it better to steam or iron a suit?

Steam the jacket and press only the trouser crease. Steam removes wrinkles without flattening the chest, shoulders or lapel roll. Pressing is for lines you want sharp, and on wool it's best done through a pressing cloth.

Can you steam a blazer that says dry clean only?

Usually yes, for light wrinkles. Steam from just above the fabric on a gentle setting and don't press down. Test on an inside seam first, and leave stains and heavy pressing to the dry cleaner.

Can you steam suit pants?

Yes. Hang them by the hem and steam from the waistband down to remove sitting creases, then press the front crease flat through a pressing cloth. Follow the existing crease so you don't create a second line.

Can you steam a suit with an iron?

Yes, if the iron has a vertical steam or steam-burst function. Hang the jacket and release steam with the iron held just off the cloth, never pressed onto the front or lapels. Save the soleplate for the trouser crease, with a pressing cloth in between.

How do you steam a blazer lapel without making it shiny or flat?

Steam it from just above, then smooth it into its natural roll with your hand while it is still warm. Don't press the plate onto the lapel. If a crease won't move, a tailor can re-press it properly.

How often should you steam a suit?

Whenever it looks creased, for example after travel or a long day of sitting. Steaming between wears freshens a suit without the wear and tear of frequent dry cleaning.

A well-steamed suit looks sharper and lasts longer. The RosyIron SteamerPro steams the jacket on its hanger and turns flat to press the trouser crease on any table. For the shirt underneath, see our guide on how to steam a dress shirt. If you'd like the hard travel case too, have a look at our bundles.