Our Cookware Bottom Stain Cleaner Contains Deionized Water, Baking Soda, And Sodium Percarbonate. It Can Clean Stubborn Stains, With A Specially Formulated Formula That Works On Tough Grime. Multiple Cleaning Ingredients Work Together To Dissolve And Remove Black Residue From The Bottom Of Pots And Pans. The Scientifically Natural Stain-Removing Formula Quickly Dissolves And Emulsifies Rust And Grease, Restoring The Shine Of Your Cookware. It Restores The Cleanliness And Luster Of Kitchen Utensils And Is Versatile, Suitable For Cleaning Stainless Steel, Glass, Ceramic Pots, Ovens, Grills, And More, Bringing Your Cookware Back To A Clean Shine. The Gentle Ingredients Will Not Harm Your Hands Or Corrode Or Damage The Surfaces Of Your Pots And Pans, Ensuring They Remain In Good Condition. The Usage Is Simple: Put On Gloves Before Use, Shake The Product, And Evenly Apply The Cleaner To The Bottom Of The Pot; Place Two Or More Layers Of Paper Towels On The Bottom, Then Apply A Layer Of The Cleaner And Wrap It Up; Leave For 8-24 Hours, Then Remove The Plastic Wrap And Paper Towels; Wipe Off The Stains With A Clean Cloth And Hot Water. The Cookware Bottom Stain Cleaner Dissolves And Emulsifies Rust And Grease, Restoring The Luster Of Kitchen Utensils; It Also Washes Cookware, Cleans Light Oil Channels, Sterilizes, Prevents Or Slows Down Metal Corrosion, And Removes Grease.