How to Wash a Hat Without Ruining Its Shape: A Step-by-Step Guide

Your favorite sun hat probably gets more wear than you realize. From sweat and sunscreen to hair products, dust, and everyday grime, residue keeps building.

The best way to keep your hats looking (and smelling) great is washing them in a timely manner. To do it right, you need to know how to wash a hat because if you wash it too aggressively, that perfectly shaped cap can come out faded, bent, or looking nothing like it did before.

To help simplify things, this guide outlines exactly how to wash hats. Keep reading to find out more.

Pre-wash checklist for your hat

Before bringing your hat anywhere near water, spend a minute checking what you’re working with. That’s because different fabrics and brim materials need different care. 

Here’s an easy checklist you can keep handy.

If you have vintage, suede, or designer hats, professional cleaning might be the safest option rather than experimenting at home. 

How to wash a hat by hand without ruining its shape

When you’re learning how to wash a hat at home, hand-washing is a good place to start for many washable baseball caps. You have much more control and don't have a washing machine tossing the brim around. 

Here’s what you need to do:

Step 1: Fill a sink with cool water

Fill a clean sink, bucket, or basin with cool or lukewarm water. Skip very hot water, especially if you're concerned about fading, shrinking, or damaging the hat's structure.

Step 2: Add a little detergent

You don't need a sink full of suds. Mix some gentle laundry detergent into the water.

A concentrated detergent such as Mozi Wash Laundry Detergent works well here because you can use a small amount rather than pouring in more detergent than the hat needs.

Step 3: Give the dirty spots some attention

Before washing the entire hat, look at the sweatband, inside of the crown, and any visibly dirty areas.

Dip a soft cloth or soft-bristled brush into the detergent solution and gently work over those spots. Don't scrub the brim aggressively — you want it clean, not bent out of shape.

Step 4: Wash the hat

Gently work the soapy water through the washable fabric, following the hat's care instructions. Avoid crushing, twisting, or wringing it as you go.

For light dirt, you may not need a long soak at all. The goal is to get the hat clean while handling its structure as little as possible.

Step 5: Rinse and reshape

Rinse away the detergent with cool water, taking care not to twist the hat.

Gently press out excess water with a clean towel. Then reshape the crown and brim with your hands before leaving it to air dry.

How to get sweat stains out of hats

Remember that yellowish line you see around the inside of your favorite cap? It’s sweat and body oils building up. But once you know how to get sweat stains out of hats, you won’t have to worry about these marks. 

To get started, treat the stain area first instead of soaking the whole hat. Follow these steps:

• Step 1: Mix a small amount of mild detergent with cool water

• Step 2: Test the solution on a hidden section of the hat first.

• Step 3: Apply it to the sweat stain using a clean cloth or a soft-bristled brush.

• Step 4: Gently work over the area without scrubbing hard enough to damage the fabric.

• Step 5: Rinse thoroughly according to the hat's care instructions.

• Step 6: Reshape and air-dry the hat rather than wringing it out.

Older sweat stains can be stubborn, so don't keep scrubbing harder if they don't disappear immediately. You could end up fading the fabric before you remove the stain.

The last resort: How to wash a hat in the washer

When it comes to hats, it’s best to avoid the washer whenever possible. That’s because the agitation in a washer can be too harsh for the hat’s material, causing wear and tear and shape loss.

A machine-washable cotton or synthetic cap may handle a gentle cycle just fine. Structured, vintage, wool, felt, leather, suede, or embellished hats are a different story. 

If your hat is labeled machine washable:

• Put it in a mesh laundry bag for some extra protection.

• Wash with lightweight items, not jeans, towels, or anything that can squash it.

• Choose cool water and a gentle cycle.

• Use a small amount of detergent.

• Take the hat out as soon as the cycle finishes.

• Reshape it immediately and let it air dry.

Tips for drying hats properly

Learning how to clean a hat is only one part of the job. If you don’t know how to safely dry it, all that gentle cleaning goes right out of the window, and you’ll end up with a misshapen hat anyway.

• Skip the dryer: Heat and tumbling can shrink fabric or mess with the brim and crown.

• Blot, don’t wring: Use a clean towel to gently soak up excess water without twisting the hat.

• Reshape while damp: Use your hands to bring the brim and crown back to their original shape.

• Support the crown: Place a clean towel or appropriately sized rounded object inside to help hold its shape.

• Let it air dry: Leave the hat somewhere with good airflow until it’s completely dry.

Give your hat a gentle clean with Mozi Wash

The detergent you use is as important as how you wash hats. You want something that can handle the sweat and everyday grime without requiring a heavy-handed wash.

That’s where Mozi Wash Laundry Detergent comes in. Its concentrated, plant-based enzyme formula gives you effective cleaning with just a small amount, while its long-lasting fragrance leaves your hat smelling properly fresh once it’s clean and dry.

Keep the shape, lose the grime

Learning how to wash hats can help you keep your favorite sun hats, baseball caps, and wide-brim fedoras looking new. 

The process is pretty simple too:

• Check what the hat’s made of

• Read the care label

• Treat stains gently

• Hand-wash with cool water and Mozi Wash detergent

• Reshape it while damp and air-dry

Just keep these things in mind and cleaning hats will become as easy as ever!

FAQs about How to Wash a Hat Without Ruining Its Shape

1. Can I wash hats in the washer?

Yes, but it’s generally not the safest or first option for most hats. You may try this if the care label on the hat says ‘machine washable’. If you’re washing the hat in a machine, remember to use cool water and a gentle cycle, avoid washing with heavy items, and reshape the hat immediately afterwards. 

2. How can I wash a white hat?

If you have a white hat, start by spot-treating any visible stains or dirt. Then hand-wash the hat as per the care label instructions. Avoid using bleach and other harsh chemical brighteners. 

3. How often should I wash my hat?

There’s no set schedule. Wash your hat when you notice sweat stains, odors, or visible dirt. Regular spot-cleaning can help you go longer between full washes. 

4. What is the safest way to wash a baseball hat?

For most washable baseball caps, hand-washing is the gentlest option. Use cool water and a little mild detergent. Also avoid twisting the brim. Then reshape and air-dry. 

5. Can I put my hat in the dryer?

It’s usually best to avoid the dryer. Heat and tumbling from the dryer can actually shrink the hat’s fabric or damage its brim and crown. Instead, reshape the hat while it’s still damp and just let it air dry.