How often to wash pajamas is a more divisive question than it seems. When I mentioned washing mine weekly, a friend was stunned—she washes hers after every wear. That conversation sparked a debate about hygiene, comfort, and habits. So what’s the right approach?

Hygiene is deeply personal. Some people sweat at night or have sensitive skin, making frequent washing feel necessary. Others barely perspire and are comfortable rewearing pajamas several nights in a row. Paying attention to your body’s needs is the best starting point.

Several factors influence how often pajamas should be cleaned. Heavy sweating, living in a hot climate, or wearing natural fabrics like cotton may require more frequent washing. Those who shower before bed or sleep in cooler rooms may be able to stretch out time between washes. Skin sensitivity is another important consideration.

Both overwashing and underwashing have downsides. Too much laundering wears out fabric quickly, while waiting too long allows oils, sweat, and bacteria to accumulate, potentially causing irritation or breakouts. Finding the middle ground protects your skin and your sleepwear.

Environmental impact also plays a role. Frequent laundry uses water and energy, especially hot washes. You can limit your footprint by washing in cold water, choosing eco-friendly detergents, and running full loads.

Experts generally recommend washing pajamas every three to four wears. Dermatologists suggest more frequent washing for people with skin issues, while textile specialists advise following care labels to extend a garment’s life.

Cultural norms also influence expectations. Some cultures view daily washing as a marker of cleanliness, while others wash far less often. Understanding these variations explains why opinions differ so widely.

Ultimately, your washing routine should balance comfort, cleanliness, and sustainability. Rotate between pairs, air pajamas out between uses, and wash when they start feeling less than fresh. There’s no universal rule—just the routine that keeps you comfortable and clean.