Always hand wash your bathing suit in cold water, then hang it to dry. The worst enemy of a swimsuit is a washing machine! While being washed, swimwear frequently becomes tangled up with other pieces of clothing, which could result in stretching or even tearing of your swimsuit. Use cold water to rinse your swimsuit. Keep your swimwear looking new by removing harsh chemicals from the hot tub, pool, and even your tanning lotion. For drying, hang your swimwear. Laying flat on a surface could encourage the growth of mold, therefore avoid doing so.