Shellac is a natural resin secreted by the female lac bug, primarily found in India and Thailand. It is harvested from tree branches, where the bugs create a protective coating. Once collected, the resin is processed into flakes, which can be dissolved in alcohol to create a liquid form used in various applications. This versatile substance is commonly used as a wood finish, providing a glossy protective layer. Additionally, shellac is utilized in the food industry as a coating for candies and pharmaceuticals, helping to preserve freshness and enhance appearance.