Definition: Viperine is a chemical compound with the chemical formula C10H8N4O2. It is commonly used in cosmetics and perfumes to create a rich, dark shade of purple or black. The primary use for viperine is as an ingredient in perfumes, especially those containing lavender, sandalwood, vanilla, or other scents. It can also be used in skincare products, such as toners, moisturizers, and serums, to give them a rich