How to restore a white bathing suit to its original color

Advice from Dr. Laundry
Q.

What is the best was to restore a dingy, white bathing suit to its original pure white color?

A.

It can be very difficult to keep an item white that picks up body soil and sunscreen that may also have a “hand wash in cold water” care label.  If the swimsuit contains any spandex, then using a sodium hypochlorite based bleach like Clorox® Regular Bleach2 is out of the question.

To improve the appearance of your swimsuit, you can try an overnight presoak using powdered Clorox2® Stain Remover and Color Booster.  Dissolve 1 scoop powder in 2 gallons of very hot water, fully submerge the suit in the soaking solution, and let it soak overnight.  Use a dishwasher safe dinner plate to weigh it down if necessary so the suit is all way into the soaking solution.  Let it soak for up to 8 hours or overnight, then pour off the soaking solution and wash the swimsuit in the hottest water recommended on the care label using detergent and more Clorox2®.