Enzymes digest proteins and fats in stains in much the same way as they digest the food you eat. Enzyme-based stain removers are highly effective on such stains as blood or chocolate. Stains may be broken apart by breaking the chemical bonds in the stain molecules.

How do stains happen?

Stains primarily form when a substance is spilled onto a surface and the molecules are trapped inside the fibers and pores of the material. The spilled substance coats the underlying material and the newly formed stain reflects back light of its own color, which is how the stain becomes visible to the naked eye.

What makes a stain permanent?

Permanent or stubborn stains are typically caused by spillages that are not removed quickly after they occurred. The key to handle such challenging spots is to remove the stains immediately after you discover it.