How to Get Creases Out of a Heavy Hoodie

Most heavy hoodies come out of September storage with a hard fold line across the chest and two more down the sleeves. A 400-plus gsm fleece holds a crease the way a folded newspaper does. It won't fall out in an afternoon, and a hot iron pressed onto the face of the cloth is the quickest way to make it worse. Here's what a crease is, what the care symbols allow, and what works on thick cotton.

What a crease is, in a cotton fleece

Cotton is cellulose, and cellulose chains hold each other in place with hydrogen bonds. Water gets between those chains and loosens them. Dry the cloth again in a new position and the bonds re-form there, and that new position is the crease. A 2019 paper in Textile Research Journal by Liu and colleagues, The mechanism of wrinkling of cotton fabric in a front loading washer, set this out for washing. They found that wrinkles put into wet cotton during the wash are temporary, but creases become fixed during the spin and the drying, as the water leaves and hydrogen bonds re-form in the deformed shape. They also found that a bigger wash load and a faster spin both lowered the smoothness grade of their cotton test fabric.

A fold line from storage is the same mechanism run slowly. The cloth sat bent for three months, took on and gave up moisture through a humid summer, and each cycle set the fold a little harder. The process runs backwards too. Put moisture and a little warmth into the crease, hold the cloth flat while it dries, and the bonds re-form flat.

The same paper notes that hydrophobic fibres such as polyester show little of this water effect. A cotton-poly fleece takes a crease less readily, but steam won't move the polyester half in the same way, and polyester marks with iron heat before cotton does. Check the fibre content on the label. The choice between the two is covered in Cotton or Cotton-Poly for a Heavy Hoodie?.

Read the iron symbol first

The dots inside the iron on a care label are maximum sole plate temperatures, not suggestions. GINETEX, the association that owns the care symbol system and keeps it aligned with ISO 3758:2023, publishes the meaning of each one on its care symbols page:

• One dot. Iron at a maximum sole plate temperature of 120 °C, without steam. GINETEX's note is that a steam iron may cause irreversible damage.
• Two dots. Maximum sole plate temperature of 160 °C. A steam iron can be used.
• Three dots. Maximum sole plate temperature of 210 °C. A steam iron may be used.
• Iron with a cross through it. Do not iron. GINETEX says irreversible changes must be expected if you do.

The North American symbol set is ASTM International's D5489, Standard Guide for Care Symbols for Care Instructions on Textile Products, which uses the same iron-and-dots idea. The catch is that most domestic irons show fabric names, not temperatures, and the mapping is up to the iron's maker. Treat the cotton setting as three dots, wool or silk as roughly two, synthetic as one, and start lower than you think you need.

In Canada there may be no iron symbol at all. The Competition Bureau's Guide to the Textile Labelling and Advertising Regulations states that care information, whether in words or symbols, is not mandatory. Where a brand does give it, the guide says it must not be false or misleading and must accurately reflect an appropriate method of care. So a missing iron symbol isn't permission, it's silence. If the label is silent, treat a heavy cotton fleece as a two-dot job and stay off the print.

Four ways that work, from gentlest to hardest

1. Hang it damp and let it fall out

For a shallow fold line this is usually enough. Mist the crease with plain water from a spray bottle until the cloth is damp through, not wet. Smooth it flat with your hands, pulling gently across the fold rather than along it. Then hang it on a wide hanger, or lay it flat, and leave it overnight. Cotton Incorporated's consumer site, The Fabric of Our Lives, gives the same first move on its page How to Unwrinkle Clothes Without an Iron: mist with a little water and smooth them out by hand. On a heavy fleece the weight of the damp cloth does the rest of the work. Whether a heavy hoodie should hang at all is a separate question, covered in Should You Hang a Heavy Hoodie or Fold It?.

2. Steam from a distance

A hand steamer, or the steam burst on an iron held 2 to 3 cm off the cloth, puts moisture and heat into the crease without pressure. Work from the inside, hold the fabric taut below the steam, and keep the steamer moving. When the crease has softened, lay the hoodie flat to dry. Never steam the face of a print. If the label shows one dot, GINETEX says steam is a risk, so skip this method and use the first one.

The shower trick, hanging the hoodie in a steamy bathroom, is on the Cotton Incorporated page as well. On a heavy fleece it softens a crease rather than removing it. Follow it with a hand-smooth and a flat dry.

3. Ten minutes in the dryer with a damp cloth

Cotton Incorporated's advice is to toss a wet washcloth in with the wrinkled clothes and run the dryer for five to ten minutes. This works on hoodies, with two conditions. Use low or medium heat, because a hot dryer is the setting most likely to shrink cotton. And take it out the moment the timer ends, or it settles into new folds in the warm drum. Lay it flat while it's still warm and slightly damp.

4. Iron it, through a cloth, from the inside

When the crease is a hard one, say the fold where a hoodie sat in a shipping bag under six others, you'll need the iron. Turn the hoodie inside out. Lay a clean cotton tea towel over the crease. Set the iron to no more than the label allows, and with no label, to two dots. Press down, hold a few seconds, lift, move. Don't slide the iron across brushed fleece under pressure. It flattens the pile in one direction and leaves a shiny track. On a cotton-poly blend, stay in the one-dot or two-dot range whatever the dial says.

Ribbing at the cuffs and hem doesn't like the iron. A damp hand-smooth is enough there.

What not to do

• Don't iron the face of a screen print. A plastisol print is a layer of plastic sitting on the cloth. Heat through a cloth from the inside is the limit.
• Don't rely on a wrinkle-release spray. Water is what loosens the crease, and a spray bottle of plain water gives you that with nothing left behind in the fleece.
• Don't rewash it just to fix a fold. A wash and spin is what sets creases in the first place, per Liu's paper. If it needs washing anyway, dry it flat and smoothed out while damp.

What the evidence does and doesn't settle

The mechanism is settled. Moisture loosens cellulose, drying under load fixes the shape, and moisture plus warmth undoes it. How the methods compare is not. The standard test for how creased a fabric looks after washing is AATCC TM124, Test Method for Smoothness Appearance of Fabrics after Home Laundering, which grades a laundered swatch against reference replicas under controlled lighting. It's a lab method for fabric after a wash, not a storage fold on a finished garment. We couldn't find a published comparison of steamers, damp-cloth dryer runs and pressing on heavy fleece. The order above comes from practice, and we'd change it if a tested comparison turned up. The five-to-ten-minute dryer figure is Cotton Incorporated's for general clothing, so on a heavy fleece check the crease at five.

Storing it so you don't have to do this again

A fold sets where the cloth is bent hardest for longest. Roll a hoodie instead of folding it if it's going to sit for months. If it has to be folded, fold it once at the waist with the sleeves flat across the body, and keep it on top of the pile. A shake and a night on a hanger before the first cold morning clears most creases.

The care notes for our own pieces are in the care section. Nothing there contradicts the above: cool wash, flat dry, and an iron only through a cloth, from the inside.

Sources

• GINETEX, The International Association for Textile Care Labelling. Care symbols, aligned with ISO 3758:2023. ginetex.net
• Competition Bureau Canada. Guide to the Textile Labelling and Advertising Regulations, September 2000, section X, non-required information, care information. competition-bureau.canada.ca
• Liu, H., Gong, R., Xu, P., Ding, X. and Wu, X. The mechanism of wrinkling of cotton fabric in a front loading washer: the effect of mechanical action. Textile Research Journal, 2019. doi.org/10.1177/0040517518821909
• AATCC. TM124-2018, Test Method for Smoothness Appearance of Fabrics after Home Laundering. members.aatcc.org
• Cotton Incorporated. How to Unwrinkle Clothes Without an Iron, The Fabric of Our Lives, 2026. thefabricofourlives.com
• ASTM International. D5489-25, Standard Guide for Care Symbols for Care Instructions on Textile Products, 2025. store.astm.org