#7: Hand-washing too vigorously
Scrubbing fabric together or, heaven forbid, against a washboard, is way too aggressive for lingerie and underwear of any kind. Simply soak bras and underwear in lukewarm, soapy water for 15 to 20 minutes. "I've seen some guides recommend as little as five, and others say up to an hour, but unless your bra is very soiled, a quarter of an hour should be plenty," says Harrington. "For areas that require more attention, a washcloth or soft bristled toothbrush can be used." Lukewarm, room temperature, and slightly warm water are all acceptable, but always be sure to use a specialty lingerie wash, such as Soak, Eucalan, or Forever New. Baby shampoo is also effective if you don't have specialty wash, adds Harrington.