How often you should wash them: After 4 to 5 wears.
What to know: You’re probably wearing these in an (overly) air-conditioned office, so feel free to revisit them multiple times, particularly those made of stain-repelling synthetic blends. Part of a suit? Dry-clean both pieces together so one doesn’t fade faster than the other.
Exception to the rule: Your nice trousers will last longer between washings if you change into your “play clothes” as soon as you leave work (as opposed to wearing them to your daughter’s soccer game).