Apply sunscreen first, especially spray-on sunscreens which contain alcohol (alcohol removes our product). Before entering the water, apply Swimmer’s Itch Guard to all uncovered skin that will be under water continuously for 5 minutes or longer. Apply liberally and evenly. When coming out of the water, light toweling off is best because it minimizes removal of Swimmer’s Itch Guard. Reapply after 60 minutes of water activity, taking a shower or hot-tub, or repeated hard toweling offs. Wash swimsuits separately in warm water.