How to Wash & Care for Scrub Caps

Wash your scrub cap right and it holds its shape, keeps its print sharp, and stays hygienic through months of daily shifts. Wash it wrong and it shrinks, fades, and hits the trash by week six.

Every wash is a balancing act between two things you care about: a thorough clean after a shift of patient contact, and gentle enough handling that the fabric survives being laundered five days a week.

This guide covers:

• Reusable cloth caps, in 100% cotton and cotton-blend or performance fabrics

• Machine washing, hand washing, drying, and disinfecting

• Fixing fading, shrinkage, odor, and worn ties

It does not cover disposable bouffant caps, which are single-use by design. If you’re still deciding which reusable style suits you, the scrub caps collection covers the tie-back and ponytail options this guide applies to. The right method depends on your cap’s fabric, so start there.

Know Your Fabric Before You Wash

Fabric decides everything: water temperature, cycle, drying method, how much agitation the cap can take. The mistakes that ruin caps happen early, usually in the first few washes.

Most printed reusable caps are 100% cotton. Cotton breathes well and absorbs sweat, which is exactly what you want under OR lights or during a long dental procedure. The trade-off is that cotton shrinks in heat and can bleed dye when overheated.

Cotton/polyester blends and performance fabrics behave differently. They resist shrinking, dry faster, and shrug off the daily wash cycle with less fuss. A sweat-wicking cap like the Perfect Match Sweat-Wicking Scrub Cap sits in this category, built for the wash-every-shift routine rather than occasional wear.

Where do you find the answer? The sewn-in care label, or the care instructions on the product page you bought it from. Check before the first wash, every time.

Reading the Care Label Symbols

Care labels compress the manufacturer’s instructions into a handful of symbols. The ones that matter for caps:

• Wash tub with a number: maximum water temperature, usually 30°C or 40°C for cotton caps

• Crossed-out triangle: do not bleach

• Crossed-out square with a circle: do not tumble dry

• Crossed-out iron: do not iron

• Hand in a tub: hand wash only

When the label is faded or missing, default to the instruction most cotton caps carry anyway: machine wash cold with like colors, air dry.

How Often to Wash Scrub Caps

After every shift. Same rule as your scrubs.

Your cap spends the whole shift collecting what the clinic throws at it:

• Airborne contaminants and aerosols from procedures

• Sweat and hair product working into the sweatband

• Pathogens picked up during patient contact

• In vet work, add animal hair, dander, and the occasional Betadine splash from a wriggling patient

The rotation tip that makes daily washing livable: own three or four caps and cycle through them. One on your head, one in the wash, one dry and ready. Each cap gets laundered less often, so each one lasts longer, and you never start a shift with a damp cap.

If your cap only comes out for occasional non-clinical wear, you can stretch the interval. For anything involving patient contact, every shift is the standard.

Machine Washing: Step-by-Step

Machine washing is fine for most reusable caps, cotton included, as long as the settings do the protecting. Here’s the full routine.

Before the Wash

1) Pre-treat stains promptly 

Blood, ink, and Betadine set fast. For blood and other protein stains, rinse in cold water first. Hot water cooks the proteins into the fibers and locks the stain in. Our guide to getting blood stains out of scrubs walks through the full method, and it applies to caps too.

2) Undo the ties and unbutton any mask buttons

Loose ties tangle around other laundry and stress the seams where they attach.

3) Sort by color

New or vividly printed caps can transfer dye for the first few washes. A print-heavy cap like the Cool Cats Scrub Cap should go in with like colors until you’ve confirmed the dye stays put.

Wash Settings That Protect the Cap

1) Water temperature

Cold to warm, no higher than 104°F (40°C). Hot water shrinks cotton and fades prints.

2) Cycle

Gentle or delicate, with a reduced spin. Less agitation means less stress on stitching and elasticity.

3) Mesh laundry bag

Worth the two dollars. It shields ties, elastic, and printed surfaces from abrasion against the rest of the load.

4) Detergent

Mild, and dye- and fragrance-free where you can get it. Dose correctly, because excess detergent leaves residue that builds up in the sweatband. If you’re unsure what qualifies as mild, our rundown of the best detergents for scrubs applies directly to caps.

What to Avoid

1) Bleach

It breaks down cotton fibers and discolors prints. Most cotton caps carry a do-not-bleach symbol for this reason.

2) Fabric softener

It coats the fibers, which cuts breathability and sweat absorption over time. On a cap, absorbency is the whole point.

3) Overloading the machine

A crammed drum cleans worse and grinds fabrics against each other harder.

Hand Washing for Delicate or Printed Caps

Hand washing is the gentler route for vivid prints, embellished caps, or any cap you want to keep in service as long as possible. A detailed print like the Border Collies Scrub Cap will hold its color longer with this treatment, and the same goes for the prints across the Dinkum Aussie scrub caps range.

The method:

1. Fill a basin with lukewarm water and a small amount of mild detergent.

2. Submerge the cap and agitate gently with your hands.

3. Work the sweatband and brow area, where sweat and hair product concentrate.

4. Rinse until the water runs clear. Leftover detergent stiffens fabric and irritates skin.

5. Press the water out between two towels. Never wring or twist, which warps the shape and strains the seams.

Is it worth the extra five minutes? For your everyday solid-color caps, the machine’s gentle cycle does the job. For the prints you’d be annoyed to lose, hand washing buys real extra life.

Drying Without Shrinking or Warping

Here’s the part most people get wrong. Caps rarely die in the wash. They die in the dryer.

Air dry flat or on a rack, away from direct heat and direct sunlight. Heat shrinks cotton, and sunlight fades prints just as reliably as hot water does.

Reshape the cap while it’s still damp. Smooth the ties, straighten the elastic, and set the crown in its intended form so it dries that way. A cap that dries crumpled stays crumpled.

Skip the tumble dryer. High heat shrinks cotton and can crack printed designs, and most cotton caps carry a do-not-tumble-dry symbol anyway. If a dryer is genuinely unavoidable, use the lowest or no-heat setting, pull the cap out while it’s slightly damp, and finish it air drying flat.

Disinfecting Scrub Caps Safely

Clean and disinfected are two different standards. A normal detergent wash removes soil, sweat, and most contaminants, which is what “clean” means. Disinfecting goes further and reduces the pathogens that washing alone leaves behind.

For most shift wear, a proper detergent wash after every shift is enough. When you want more, after a heavy isolation day or a parvo case in the kennels, you have bleach-free options:

• Oxygen-based laundry sanitizers: Color-safe, cotton-safe, and added straight to the wash.

• The warmest water your fabric allows: Stay within the care label’s limit. A 104°F wash with a sanitizer beats a 140°F wash that shrinks the cap.

That temperature ceiling is the honest tension here. Hot-water sanitizing and shrink-prone cotton pull in opposite directions, so weigh the hygiene need against what the fabric can take, and let the sanitizer do the heavy lifting.

One boundary to be clear about: a reusable cloth cap is not sterile PPE. In sterile-field settings, your facility’s protocol and single-use surgical caps govern, no matter how well you launder your own.

Fixing Common Scrub Cap Problems

When washing goes wrong, it usually goes wrong in one of four ways. All four are preventable.

Fading Prints and Colors

The causes are the usual suspects: hot water, sunlight drying, bleach, and sheer wash frequency. The fixes are cold washes, turning the cap inside out, and air drying in the shade. A rotation of several caps also spreads the fade across the set instead of concentrating it on one.

Shrinkage

Heat, either in the wash or the dryer. Prevention is temperature control at both stages. Recovery is limited once cotton has shrunk, so this one is worth preventing rather than fixing. Gentle stretching while damp can claw back a little, but a badly shrunk cap rarely fits right again.

Lingering Odor or Sweat Buildup

Pre-soak in cold water with a splash of white vinegar or a scoop of oxygen cleaner before the normal wash. Then make sure the cap dries fully before it goes in a drawer. A cap stored damp grows mildew, and mildew smell survives ordinary washing.

Fraying Ties or Stretched Elastic

Mechanical stress from the machine. The mesh bag, the gentle cycle, and occasional hand washing all reduce it. Fraying is also a construction-quality signal: reinforced ties and secure stitching are the difference between a cap that survives a year of shift laundering and one that unravels by month three.

Making Scrub Caps Last Longer

Everything above compresses into four habits:

• Rotate three or four caps so no single cap takes the full laundering load

• Store caps clean and completely dry, flat or loosely folded, so they hold their shape

• Buy caps built for repeat washing: reinforced ties, quality fabric, secure stitching. Our caps are designed by healthcare workers for daily shift use, and something like the Little Fox Surgical Scrub Cap shows the construction traits worth checking on any cap you consider

• Retire caps with thinning fabric or failed elastic. A worn-out cap fits badly and defeats the hygiene purpose

When a cap does reach retirement, our scrub cap styles guide covers the tie-back, ponytail, and bouffant options for the replacement, and the full range of scrub caps is built for the wash-after-every-shift routine this guide assumes.