What are the benefits of using polyurethane on furniture for protection and durability?

Polyurethane provides a protective coating on furniture that helps to prevent scratches, stains, and damage from moisture. It also enhances the durability of the furniture by creating a hard, durable surface that can withstand everyday wear and tear. Additionally, polyurethane can add a glossy or matte finish to the furniture, enhancing its appearance and giving it a polished look.