How To Clean A Pillow That Can't Be Washed (Spot Clean Method)

Why Can't Some Pillows Be Washed?

Memory foam pillows, latex pillows, and pillows with certain natural fills (like buckwheat or kapok) cannot be machine washed or submerged in water. The agitation of a washing machine breaks down foam cells, causing permanent loss of support and crumbling. Submerging memory foam in water traps moisture inside the foam, leading to mould growth that can never be fully removed. Even hand‑washing with too much water will ruin these pillows. The only safe method is spot cleaning.

The Complete Spot Clean Method (Step‑by‑Step)

1. Remove the pillowcase and protector — wash these separately in hot water with hypoallergenic detergent.
2. Vacuum the pillow surface — use a upholstery attachment to remove dust, dead skin, and dust mite debris.
3. Spot clean stains: Mix 1 teaspoon of mild dish soap with 2 cups of lukewarm water. Dip a white cloth into the solution, wring until barely damp, and dab (don't rub) the stain. Blot with a dry cloth to remove moisture.
4. Deodorise with baking soda: Sprinkle a generous layer of baking soda over the entire pillow surface. Let it sit for 24 hours (or at least 8 hours) to absorb oils and odours.
5. Vacuum thoroughly: Use the upholstery attachment again to remove all baking soda residue. May need 2–3 passes.
6. Air dry completely: Place the pillow in a well‑ventilated area away from direct sunlight for 12–24 hours before putting the cover back on.

What NOT to Do (Mistakes That Destroy Pillows)

• Do not machine wash memory foam — it will tear apart in the spin cycle.
• Do not submerge in water — water trapped inside leads to mould.
• Do not use bleach, hydrogen peroxide, or fabric softener — these break down foam cells.
• Do not put a wet memory foam pillow in the dryer — heat damages foam and may cause a fire hazard.
• Do not wring or twist the pillow — this tears the internal foam structure.

How Often Should You Clean an Unwashable Pillow?

Spot clean and deodorise every 3–6 months. Vacuum the pillow surface monthly. Wash the pillowcase and protector weekly. Even with proper cleaning, memory foam pillows should be replaced every 2–3 years because oils and dead skin cells accumulate beyond what spot cleaning can remove. If you notice yellow stains that don't come out, or if the pillow develops a permanent musty smell, replace it.

Alternative: Use a Pillow Protector (Prevention Is Best)

The best way to "clean" an unwashable pillow is to prevent it from getting dirty. A high‑quality, waterproof, washable pillow protector goes under your pillowcase. It blocks sweat, oils, drool, and dust mites from reaching the pillow. Wash the protector monthly in hot water. This can extend your pillow's life to 3–4 years instead of 2.

When to Replace Instead of Clean

• Pillow has permanent yellow or brown stains (sweat has penetrated deep)
• Musty smell remains after baking soda treatment
• Pillow feels lumpy or has lost its shape
• You wake up with allergy symptoms (stuffy nose, itchy eyes) even after cleaning
• Pillow is over 3 years old for memory foam

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