How to Wash and Care for Linen Pillowcases Bought Online in the USA

What Garment-Washed Actually Means — and Why It Changes Everything

Most linen pillowcases sold online in the USA arrive in one of two states: raw and untreated, or pre-washed. That distinction matters more than thread count, color, or price when it comes to care.

Raw linen is woven under tension. Linen is made from the fibers of the flax plant, and during the weaving process those fibers are pulled taut and held under constant tension. The first time you introduce linen to water — especially warm water — that tension is finally released. The fibers relax, settle back into their natural state, and contract slightly. On a raw pillowcase, that contraction can be significant. Raw linen typically contracts by 7–10%, equivalent to one to two clothing sizes.

Garment-washed linen is different. Some linen products are pre-washed during manufacturing, making them softer and more tolerant of machine washing. Many manufacturers pre-wash their linen products, reducing shrinkage to a mere 2–3% even when machine-dried. That pre-wash also opens the fiber structure so the fabric arrives at your door already broken in — softer, more relaxed, and far less likely to behave badly in the laundry.

MATTEO’s linen pillowcases — including the Vintage Linen and Cluny styles — are garment-washed using a special dyehouse process that penetrates and softens each fiber before the product ever ships. This wash opens and penetrates the depths of the fibers, softening each one and creating a truly special sleep. The practical upside: you skip the dramatic first-wash shrinkage that catches so many buyers off guard.

But garment-washing is not the same as “wash-proof.” The care steps below apply whether you bought from a Los Angeles designer or a generic online retailer.

Washing: Temperature, Cycle, and Detergent

The single most damaging thing you can do to a linen pillowcase is wash it in hot water. High heat is the single biggest cause of permanent linen shrinkage. Set the water to cold or lukewarm — a maximum of 30°C / 86°F. Anything hotter risks shrinkage of 3–10% on the first wash. For garment-washed pieces, the risk is lower, but the principle holds: keep the temperature down.

Machine washing is safe for almost all 100% linen. The trick is cool water, a gentle cycle, and a mild detergent. Select the delicate or gentle setting on your machine, and keep the spin speed low. Remove the pillowcases immediately when the cycle ends — wet linen left in the drum mildews fast and sets deep wrinkles.

Detergent choices matter more than most people realize. Use a mild liquid detergent for linen. Washing powder can get caught in the fibers and reduce softness and the lifetime of fabric. Opt for a mild liquid detergent formulated for delicate fabrics. Avoid soaps containing optical brighteners and other harsh chemical cleaning agents, as they can weaken and potentially discolor the fabric. A small amount goes a long way — use concentrated laundry soap sparingly. A quarter-cup is typically plenty, especially with a high-efficiency washing machine.

Skip fabric softener entirely. One of linen’s most loved qualities is how it gets softer and softer with every wash, all on its own. Fabric softeners actually work against this by coating the natural fibers. This waxy residue can interfere with linen’s breathability and moisture-wicking properties. If you want a natural softening boost, try adding a splash of white vinegar to the rinse cycle instead.

And bleach is never appropriate for linen. Bleach should never be used on linen, as it weakens the natural fibers and can cause discoloration. For garment-dyed linen in particular — the kind dyed after weaving to achieve those muted, lived-in tones — bleach and whitening agents will strip the color unevenly and permanently.

Sorting before washing is worth the extra thirty seconds. New colored linen can bleed for the first 2–3 washes. Wash darks with darks, whites with whites, and keep new purchases separate for the first couple of cycles. Don’t overload the machine — linen needs room to move so water and detergent rinse cleanly. Fill the drum no more than two-thirds.

Drying: The Step That Causes the Most Damage

If washing is where people make mistakes, drying is where they cause real damage. High heat in the dryer can be even tougher on linen than washing. When moisture is pulled from the fibers too quickly, they tighten and draw inward.

Air drying is the best option for linen pillowcases in most situations. To minimize wrinkles, remove bedding from the washing machine as soon as the cycle ends and give it a good shake before hanging to dry. Hang pillowcases on a line or drying rack out of direct sunlight — keep away from direct sunlight to preserve color.

If you use a dryer — and in many American apartments and homes, that’s the practical reality — keep the heat low. If you prefer using a dryer, select a low-heat setting and remove the items while slightly damp. Once the drying cycle is complete, quickly remove the sheets from the dryer to prevent over-drying and minimize wrinkles. Laying them flat or smoothing them by hand at this stage takes thirty seconds and saves you from ironing later.

MATTEO’s own care guidance for their linen pillowcases recommends tumble drying on low heat, removing promptly, and line drying for best results — which lines up with everything the fabric science suggests. The low-heat, quick-removal approach is the practical sweet spot for anyone without a backyard clothesline.

Stain Removal, Ironing, and the Wrinkle Question

Linen pillowcases sit against your face for seven or eight hours a night. Body oils, skincare products, and the occasional makeup transfer are inevitable. The rule with linen stains is speed. Linen takes pre-treatment well, but speed matters — fresh stains lift, set stains fight back.

For most stains, dab — never rub — with cold water and a small amount of mild dish soap or detergent. For sweat and yellowing, soak in cool water with a tablespoon of oxygen-based stain remover for 30 minutes before washing. For oil and grease, sprinkle baking soda or cornstarch on the spot, let it absorb for 15 minutes, then brush off and wash. Chlorine bleach should be avoided in all cases — it weakens flax fibers and can turn whites yellow over time.

On the question of wrinkles: linen wrinkles. That is a feature of the fiber, not a defect. The best way to handle wrinkles is to embrace them. That relaxed, slightly crumpled look is part of what makes linen so effortlessly stylish. MATTEO’s design philosophy leans into exactly this — the brand describes preferring a “lived-in look” and doesn’t iron their sheets frequently.

But if you prefer a crisper finish, finish by ironing or steaming for a crisp, smooth look, particularly for pillowcases or decorative bedding. Iron while the fabric is still slightly damp, using the linen or high setting. A garment steamer is a brilliant and much gentler alternative to a hot iron for removing deeper creases without the risk of scorching.

Storage and How Often to Wash

Storage is where linen care tends to get overlooked. Make sure linen is fully dry before storing — even slight dampness causes mildew. Use breathable cotton or linen storage bags. Plastic traps moisture and can yellow the fabric. Store flat or loosely rolled — sharp folds in the same place repeatedly can break fibers over time.

As for washing frequency: linen bed sheets should be laundered every one to two weeks — and pillowcases, which have the most direct skin contact, follow the same interval. For regular cleaning, wash pillowcases once a week if you don’t sweat a lot or don’t have sensitive skin. If you have sensitive skin or produce a lot of sweat or oil, you should change pillowcases more often — maybe once every two days. Having two sets in rotation makes this easy: one on the bed, one in the wash.

With each wash, linen pillowcases become measurably softer. Derived from the flax plant, linen’s durability and tendency to grow softer with time make it ideal for bedding that can last for years. That progressive softening is the payoff for treating the fabric correctly from the start. A garment-washed linen pillowcase bought online today — cared for properly — can still be on your bed a decade from now, softer than it arrived.

If you’re shopping for linen pillowcases to start or add to a set, MATTEO’s linen pillowcase collection includes options in both the Vintage Linen and Cluny styles, all garment-washed, in a full palette of colors, and designed to pair with their flat sheets, fitted sheets, and shams. Free shipping across the USA.