4. It can worsen your allergies.
If you’re allergic to dust or have other respiratory disorders, sleeping in old pajamas may cause serious damage. Dust mites eat dead skin flakes, so they’re attracted to your mattress and nightwear, causing breathing problems. If you’re allergic to dust, it’s better to change your pajamas out at least every other night.
5. It may give you acne.
When you don’t change your nightwear, bacteria and dead skin cells build up in the fabric. At night, it gets pressed up against your pores, blocking them and causing breakouts. When you sweat in your sleep, your pajamas absorb sweat, causing pimples.
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