How to Wash and Care for 100% Cotton Clothes: The Complete Guide

There’s nothing worse than pulling a favorite cotton sweatshirt out of the dryer and realizing it no longer fits the way it did last week.

How to wash 100% cotton: machine wash in cold water up to 40°C / 105°F, use no bleach, and tumble dry on low or air-dry. That single routine keeps cotton soft, keeps colours true, and keeps shrinkage to a predictable 2-3%.

This guide covers how to wash 100 cotton properly, how to dry it, how to prevent pilling, and how to handle the pieces you wear most. If you want to start with our softest everyday cotton, browse 100% cotton sweatpants or the UltraSoft women’s collection.

The Quick Answer: How to Wash and Dry 100% Cotton

If you only remember five things:

1. Cold water. Maximum 40°C / 105°F.
2. No bleach.
3. Low heat or air-dry.
4. Wash with like colours.
5. Wash sand-coloured garments separately on the first wash.

Everything below explains why each one matters and how to handle the exceptions.

What Is the Best Way to Wash 100% Cotton?

The best way to wash 100 cotton is a cool, gentle cycle with a mild detergent and a full rinse.

Cotton fibre is strong when wet, but it is not indestructible. Heat is what moves it. Hot water relaxes the fibres, agitation works them, and high dryer heat locks in the change. Cool water keeps that process from starting.

Pre-shrunk construction already does part of this work in the factory, which is why our garments are designed for 2-3% shrinkage rather than a dramatic size change. Care still matters. Pre-shrunk does not mean shrink-proof.

Cotton Washing Instructions: Your Setting Checklist

Before you press start, confirm:

• Water temperature is cold, and no hotter than 40°C / 105°F
• The load is not overloaded, so garments can move freely
• Zippers and buttons are closed
• Heavily soiled items are not mixed with lightly soiled ones
• Detergent is mild, and bleach stays out of the machine

100% Cotton Washing Instructions, Step by Step

Here is the full routine for sweatshirts, hoodies, sweatpants, polos and tees.

1. Read the care label first

The label is the final word for that specific garment. It accounts for fabric weight, dye, trims and construction.

2. Wash in cold water

Machine wash in cold water, with a maximum temperature of 40°C / 105°F. Cold water protects colour and limits fibre movement.

3. Wash with like colours

Sort lights, darks and brights. This is especially important for new, deeply dyed garments.

4. Turn garments inside out

Turning items inside out reduces surface friction, which is one of the main causes of pilling. It also protects any prints or surface texture.

5. Use a mild detergent and no bleach

Bleach weakens cotton fibres and can strip colour. Use a mild, ideally fragrance-free detergent. If your skin is sensitive, an extra rinse helps remove residue. See our hypoallergenic clothing guide for more on this.

6. Wash sand-coloured garments separately

Wash sand-coloured garments separately, especially for the first wash, to help prevent dye transfer onto lighter items. One extra load can save a favourite white tee.

7. Choose the right cycle

A normal or gentle cycle is enough. Heavy agitation adds wear without adding cleanliness. Do not overload the drum.

How to Dry 100% Cotton Without Shrinking It

Drying is where most cotton accidents happen.

Tumble dry on low

Low heat is the practical middle ground. Remove garments while they are still slightly damp, then reshape them and let them finish drying flat or on a line.

Or air-dry

Air-drying is the gentlest option and the best choice for anything you want to keep at its current size. Lay heavy knits flat so they do not stretch on a line.

Never overdry

Overdrying is what makes cotton feel stiff and look tired. If the garment is hot to the touch when the cycle ends, it has been in too long.

Reshape while damp

Cuffs, waistbands, collars and hems hold their shape better if you smooth them back into place while the fabric is still damp.

Can You Dry Clean 100% Cotton?

Yes, cotton can be dry cleaned, but most everyday cotton garments do not need it.

Dry cleaning is worth considering when the care label recommends it, when a garment has a special construction or finish, or when you are dealing with a stain you cannot lift at home. For regular cotton sweatshirts, hoodies, sweatpants, polos and tees, a cold machine wash is simpler, gentler on the environment, and completely sufficient.

If the label says machine wash, you do not need dry cleaning just because the garment is 100% cotton.

How Much Do 100% Cotton Clothes Shrink?

Our cotton garments are designed for 2-3% shrinkage. On a sweatshirt with a 26-inch body length, that is roughly half an inch to three quarters of an inch.

Most movement happens in the first few washes. After that, shrinkage becomes far less noticeable, particularly if you avoid hot water and high dryer heat.

Want the full explanation of why cotton moves and how pre-shrunk processing works? Read Does 100% Cotton Shrink?

How to Prevent Pilling on Cotton Clothing

Pilling is surface friction, not a fabric defect. It happens where cotton rubs against cotton, seatbelts, bags, sofas and coats.

To reduce it:

• Turn garments inside out before washing
• Wash with like colours and similar weights
• Avoid overloading the machine
• Skip bleach and harsh detergent
• Tumble dry on low, or air-dry
• Give high-friction areas, like cuffs, a rest between wears

Our garments carry a No-Pilling Guarantee. Combined with the care routine above, a well-made cotton piece stays smooth and presentable far longer. Shop our Heavyweight Cotton Fleece crewnecks to see the fabric this applies to.

What About Grey Mix and Other Exceptions?

Most Just Sweatshirts products are 100% cotton. The one stated exception is our Two Tone Speckled Look in Grey Mix, which contains 95% cotton and 5% polyester. That small polyester content creates the signature two-tone speckle and helps the garment hold its shape.

Grey Mix items are still covered by our No-Pilling Guarantee. Wash them the same way: cold water, no bleach, low heat or air-dry.

Always check the individual product page if fibre content matters to you.

Simple Stain Tips for Cotton

Treat stains quickly, while they are still fresh.

• Blot, do not rub. Rubbing pushes the stain into the fibre.
• Cold water first. Hot water can set protein stains.
• Dilute, then dab. A little mild detergent on a cloth, worked from the outside of the stain inward.
• Check before drying. If any mark remains, wash again. Heat will set whatever is left.
• Test first. Try any treatment on an inside hem before using it on the visible surface.

For a stain you cannot lift, professional dry cleaning is a reasonable next step.

How to Store 100% Cotton Clothes

Only store garments that are completely dry. Damp cotton can develop odour and mildew.

• Fold heavy sweatshirts and knits rather than hanging them, so shoulders keep their shape.
• Hang polos and lighter tees on shaped hangers.
• Keep storage cool, dark and dry.
• Use breathable cotton storage bags rather than sealed plastic.
• Avoid overpacking, so air can move between garments.

Care Instructions for 100% Cotton: The Short Version

• Machine wash cold, maximum 40°C / 105°F
• Wash with like colours
• No bleach
• Turn inside out to reduce pilling
• Wash sand-coloured garments separately on the first wash
• Tumble dry on low or air-dry
• Reshape while damp
• Expect 2-3% shrinkage

Every Just Sweatshirts garment is North American Made from heavyweight cotton, built for everyday wear and designed to stay comfortable season after season.

Frequently Asked Questions About 100% Cotton Care

The Bottom Line

Caring for 100% cotton is not complicated. Cold water, no bleach, low heat, and a little attention to sorting and reshaping.

Do that, and your cotton clothing stays soft, keeps its colour, and holds the fit you bought it for. Expect 2-3% shrinkage, follow the label, and your favourite pieces will keep earning their place for years.

Shop 100% cotton sweatpants, Heavyweight Cotton Fleece crewnecks, or the UltraSoft women’s collection. Orders of $150 or more qualify for free shipping.