Exactly how to wash and care for your bras so they last for years to come, according to laundry and undergarment pros.

A high-quality bra that’s both comfortable and flattering often costs more than the top you end up wearing over it. So yeah, you sure as heck want to keep yours in great shape for as long as possible.

What can you do to make that happen? It’s all in the laundering, experts say. How you wash your bras—and how often you wash them—can spell the difference between underthings that maintain their shape and stretchiness for years and ones that start to lose their oomph after just a few wears.

To get it right, here’s what the pros say you should know.

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