Whitening a Yellowed Collar

From Lucky Magazine, september 2007:

Seun Lim, designer of the denim brand James Jeans Dry Aged Denim, swears by this quick fix for freshening up a favorite button-down.

• You'll need: A bottle of Johnson's Baby Powder and an iron.
• How it's done: Set iron to medium with the steam option turned on. Sprinkle onto the shirt just enough powder to cover the stained area and spread it with your fingertips. Hold the iron an inch above the soiled spot and steam for a few seconds. Then press down the iron for a count of three to set, and shake off the excess. Let the shirt cool before wearing.

Whitening Underarms Stains

From Lucky Magazine, april 2008:

Karen Reinitz and Abigale Levinson, the designers behind the preppy-cool line AKA New York, swear by this tip for freshening up yellowed T-shirts.

• You'll need: One tablet of aspirin and a washing machine.
• How it's done: Put your discolored tees in the machine and let the water start streaming in (temperature doesn't matter); add detergent as usual. Drop in one aspirin when the basin is filled with water, close the door and let the cycle finish. "White tees really do come out looking whiter than ever," says Levinson.