Midseason slump: They’re turning dingy and yellow.
How to beat it: One to two wears is the max you can get out of white jeans before cleaning them. “Unless a garment is 100 percent cotton, avoid chlorine bleach, which can cause yellowing,” says Linda Cobb, the author of Talking Dirty Laundry (Pocket Books, $14, amazon.com). Instead, use an additive-free version, like Vaska Oxygen-bleach ($6 for 42 ounces, soap.com). Once jeans start to look dingy at the seams, add a half cup of White Brite ($7.50 for 30 ounces, acehardware.com) to the washer and presoak for five minutes.