Follow the care instructions to ensure the rash guard's longevity and appearance. Hand-rinse your rash guard with cool water right after taking it off. Never use hot water, only cool or lukewarm. Turn the garment inside out and hand wash using a biodegradable soap. It’s best to use a shampoo or cleaner designed for cleaning rash guards or wetsuits. Hang dry away from direct sun or heat. Don’t fold or ball up the garment because it can weaken the fabric. Don’t leave it in the trunk of your car because it can be damaged by heat.