The short answer: To wash a duvet, remove the cover, pre-treat any stains, and machine-wash on a gentle, cool cycle with a small amount of mild detergent. Skip the fabric softener. Dry on low heat with wool dryer balls, fluffing every 30 minutes until it’s completely dry to prevent clumping.
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Here’s a confession: I went years without washing my duvet insert, because honestly, I was scared I’d wreck it. And that fear is fair — wash it wrong and you end up with a lumpy, clumped mess that never feels the same. But once I learned the right way, it turned out to be genuinely simple. Below, I’ll walk you through exactly how to wash a duvet or comforter — both down and synthetic — without ruining the fill, plus how to dry it so it comes out fluffy, and how often you actually need to do it.
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