What is shellac sealer and what is it used for and why is it used?

Shellac sealer is a natural resin obtained from the secretions of the lac bug, often dissolved in alcohol to create a liquid finish. It is used primarily in woodworking and finishing as a primer, sealer, and finish due to its Excellent adhesion, quick drying time, and ability to block stains. Additionally, shellac is favored for its non-toxic properties and versatility, making it suitable for various surfaces, including wood, metal, and plaster. Its glossy finish enhances the appearance of the substrate while providing a protective barrier.