Golf Tutorials

How to Wash Golf Caps

By Spencer Lanoue
July 24, 2025

That favorite golf cap of yours has seen better days, hasn’t it? Caked with a mix of sun, sweat, and on-course dust, it probably carries the memories of great rounds and tough ones. But you don’t have to demote it to yard work only status just yet. This guide will walk you through, step by step, the best ways to wash your golf cap, so you can get it clean and fresh without destroying its shape or vibrant color.

Before You Wash: The Essential Prep Work

Jumping straight to the sink without a little reconnaissance is the fastest way to turn a favorite cap into a shapeless, faded mess. A couple of minutes of prep work will make all the difference, trust me. It’s like checking your yardage before you pull a club - you just get a better result.

First, Look at the Care Label

Before you do anything else, find that little tag inside your cap. It’s your manufacturer’s direct instruction manual. Often, you'll find info on the material composition (like 100% cotton, polyester, or a blend) and wash care symbols. Some common ones include:

  • Cotton: Very common for caps. It’s durable but can sometimes shrink in hot water.
  • Polyester/Synthetics: Great at wicking moisture, which is why performance caps use them. They are generally resilient and hold their color and shape well.
  • Wool: Less common in modern golf caps, but some older or premium styles use it. Wool is notorious for shrinking and requires extra care - usually cool water and absolutely no heat.
  • "Dry Clean Only": If you see this, believe it. Trying to wash it at home is a gamble you’ll likely lose.

If there's no tag, don't worry. We'll proceed with the safest method, but having that information is always your best starting point.

Determine the Cap's Age (and Brim Material)

This is probably the most important pre-wash check. The structural integrity of your cap’s brim is what we need to protect. The material inside has changed over the years.

  • ModernCaps (made after the early 1980s): The overwhelming majority of modern caps use a sturdy, flexible plastic for the bill. These are built to withstand a proper (gentle) wash.
  • Vintage Caps (made before the 1980s): That old-school cap you found in your dad’s closet might have a cardboard bill. If you soak a cardboard bill, you'll end up with a lumpy, disintegrated pulp.

How to tell? Do a quick flex test. Gently bend the brim. A plastic bill will be smooth and spring back easily. A cardboard bill often feels stiffer, a bit more brittle, and might even make a slight crinkling sound if you listen closely. If you suspect you're dealing with cardboard, you must avoid submerging the cap completely and stick to spot cleaning only.

Do a Quick Colorfastness Test

Ever washed a new red sock with your whites? Let's avoid that kind of disaster with a bright-colored cap. You want to make sure the dye won't bleed all over the place, especially on caps with white panels or contrasting stitching.

  1. Find an inconspicuous spot, like the underside of the brim or inside the sweatband.
  2. Dab a small amount of your detergent onto a white cloth and get it slightly damp with water.
  3. Gently rub the damp, soapy cloth on that hidden spot.
  4. Wait a minute or two, then press a clean section of the white cloth against the area.

If you see color transferred to the cloth, the dye is not stable. You'll need to be extremely careful, use only cold water, and avoid soaking for long periods.

The Best Way to Wash a Golf Cap: Hand Washing (Recommended Method)

Alright, time for a little elbow grease. I know it seems like more work, but hand washing is, without a doubt, the safest and most effective way to clean a baseball-style cap. It gives you complete control over the process, allowing you to focus on stained areas while protecting the cap's structure and any delicate embroidery. This is the Tour-pro method for gear care.

What You'll Need:

  • A clean sink, bucket, or basin
  • Mild laundry detergent (one without bleach or harsh chemicals). Alternatively, a bit of OxiClean or even hair shampoo can work in a pinch.
  • A soft-bristle brush (an old toothbrush is perfect)
  • A clean, dry towel

Step-by-Step Hand Washing Guide:

  1. Fill Your Basin: Fill your sink or basin with cool to lukewarm water. Avoid hot water at all costs. Hot water is the enemy of caps - it can cause cotton fibers to shrink, fade colors, and even weaken the plastic in the brim over time.
  2. Add Detergent: Add a small amount of your mild detergent (a teaspoon or two is plenty). Swish it around with your hand to make sure it's fully dissolved and creates some light suds.
  3. Pre-Treat Stains: This is where you target the main culprit: the sweatband. Dip your toothbrush into the detergent and apply it directly to the stained ring inside the cap. Gently scrub the sweatband in small circles. Let that sit for about 20-30 minutes before the main soak. This gives the detergent time to start breaking down those sweat and oil stains.
  4. Submerge and Soak: Place your cap in the soapy water and gently swish it around. Make sure the entire cap is submerged. Let it soak for at least 30 minutes. If your cap is particularly grimy from a few hot summer rounds, you can let it soak for an hour or even two.
  5. Gentle Scrubbing: After the soak, give the cap another once-over with your toothbrush. Focus on any remaining soiled spots, like fingerprints on the brim or dirt on the crown. Be gentle! You're just helping the dirt along, not trying to scrub the fabric into oblivion. Use extra care around any embroidered logos or patches.
  6. Rinse Thoroughly: Drain the dirty water and refill the sink with clean, cool water. Swish the cap around to rinse it out. You’ll want to drain and refill two or three times until you’re confident all the soap is gone. Gently squeeze the crown of the cap to push water out, but never wring or twist the cap. Torsional force is a cap’s kryptonite - it can permanently warp the brim and crown structure.

A Quick Word About the Washing Machine

I can hear some of you asking, "Can't I just throw it in the washer?" The simple answer is: you can, but it's risky. I wouldn't do it with a cap I truly care about. However, if you must, follow these rules to minimize the potential for damage:

  • Use a cap form. These plastic cages are designed to hold your cap’s shape during the wash cycle. Without one, your cap will get crushed. A mesh laundry bag is a distant second-best option.
  • Use the gentle or delicate cycle. No exceptions.
  • Wash in cold water ONLY.
  • Wash the cap by itself or with a few very light items, like a couple of golf towels. Never wash it with heavy items like jeans or hoodies.

The #1 Mistake to Avoid: Don't Use the Dishwasher!

You may have heard of this "life hack" before. Don’t fall for it! The idea of placing your cap in the top rack of the dishwasher is a fast track to ruining it. Dishwasher detergents contain harsh chemicals and bleaching agents that are designed to strip caked-on food from ceramic and glass, not treat delicate fabrics. Furthermore, the high heat from the drying cycle is guaranteed to warp the plastic brim and could even melt parts of a synthetic cap. Just say no to the dishwasher method.

Drying Your Golf Cap for That Perfect Shape

You’ve done the hard part and your cap is clean. Now, how you dry it is just as important as how you washed it. This is the final step that will lock in that fresh, like-new shape.

Step 1: Remove Excess Water

Lay a clean, dry towel flat on a counter. Place your wet cap on one half of the towel and fold the other half over it. Gently press down on the cap to blot out the excess water. You can flip it and press again on a dry section a couple of times. Remember the rule: pat, don’t wring.

Step 2: Reshape the Cap

This is the most critical part of the drying process. You need to give the cap a form to dry on to ensure it retains its classic dome shape. Find something roughly the size and shape of your head. Great household options include:

  • A large coffee can
  • A balled-up bath towel stuffed inside
  • A large glass vase or jar
  • A spray paint can
  • Even an inflated balloon

Placing it over a form allows air to circulate and prevents the crown from collapsing and drying with creases.

Step 3: Air Dry in the Right Spot

Once your cap is sitting on its drying form, place it in a well-ventilated area until it's completely dry. This might take 24 hours or longer, so be patient. Two final rules for drying:

  1. Keep it out of direct sunlight. The sun's UV rays can severely fade the color of your freshly cleaned cap.
  2. Keep it away from direct heat. This means no placing it in the clothes dryer, using a hairdryer on it, or setting it on a radiator. Quick heat causes shrinkage and can damage the hat.

Final Thoughts

Washing your favorite golf cap doesn’t have to be a gamble. By properly preparing it, opting for a gentle hand wash, and patiently letting it air-dry on a form, you can bring it back to life while preserving its shape and color. It’s a simple process that keeps your go-to gear looking sharp on the course.

Just like taking care of your equipment helps you play with more confidence, getting clear advice when you need it can transform your game. If you ever have questions - whether it’s about course strategy, club selection, or tricky rules you're not sure about - we’ve designed Caddie AI to give you those expert answers in seconds. You can even snap a photo of a tough lie for instant guidance, bringing a little more certainty to every part of your game.

Spencer has been playing golf since he was a kid and has spent a lifetime chasing improvement. With over a decade of experience building successful tech products, he combined his love for golf and startups to create Caddie AI - the world's best AI golf app. Giving everyone an expert level coach in your pocket, available 24/7. His mission is simple: make world-class golf advice accessible to everyone, anytime.

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