Shellac is a natural resin secreted by the lac bug (Kerria lacca) on trees in the forests of India and Thailand. It is processed and sold as dry flakes and dissolved in ethanol to make liquid shellac, which is used as a brush-on colorant, food glaze, and wood finish. Shellac has a long history of use in woodworking, where it serves as a primer, sanding sealer, tannin-blocker, odor-blocker, stain, and high-gloss varnish. It is also used in the food industry as a coating for candies and pharmaceuticals to enhance their appearance and shelf life. In the electrical industry, Shellac is employed as an insulating varnish for electrical components. Its versatility, biodegradability, and non-toxicity make Shellac a valuable natural product, although proper handling and storage are essential to maintain its quality and effectiveness.

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