Today our home and lifestyle editors are reviewing Downy’s In-Wash Laundry Scent Booster Beads. Their revolutionary in-wash Scent Booster Beads are an easy add-on to your regular detergent that will help you personalize how your family’s laundry smells. – The core expression of Downy’s scent booster line. Going in, we assumed Downy Scent Booster Beads would be the same. The Unstopables Unlimited Collection takes Downy Unstopables to unbeatable heights.