Gain Fireworks In-Wash Scent Booster gives your laundry up to 12 weeks of freshness, from wash until wear! • Works with your favorite detergent Add Gain to every step of your laundry for more of the great Gain scent • Can be used on all colors and fabrics, and is safe to use in all washing machines • Regular and HE Washer compatible Dissolves in hot and cold water