Tide Professional Whiteness Enhancer features an industry-first technology that immediately starts rejuvenating old, dingy linens. You'll see the difference the very first time you use it. Closed Loop—Designed for Use with P&G Professional dispensing equipment. Application: Laundry Booster; Applicable Material: Fabric; Dirt Types: Food Stains; Grass Stains; Grease; Oil-Based Soil; Organic Matter; Water-Based Soil; Scent: Unscented.