Luster Professional Oxy Presoak and Destainer is a specially formulated, oxygen-based destainer for plastic, china, stainless steel and other kitchenware. Safely and effectively destains coffee, tea and other food stains without harming the finish or corroding soft metals. Application: Dishwashing Presoak; Applicable Material: China; Kitchenware; Plastic; Stainless Steel; Chemical Compound: Sodium Percarbonate (15630-89-4); Dirt Types: Coffee Stains; Food Stains; Tea Stains.