Carmine varnish - called a red precipitate obtained by adding alum or a mixture of alum and tin salt to an alkaline broth of cochineal. Suitable for oil.
• Chemical description: Natural carmine is a red-purple dye derived from carminic acid produced by female cochineal insects. Carmine is registered as a food additive E120.
• Light fastness: 5
• Color Index: NR4
• Suitability: Oil, Acrylic, Tempera, Watercolor / Gouache,
• Color: raspberry-pink with purple tint.
• Alkali resistance: 5
• Lime resistance: 5
• Acid resistance: 3
• Hiding power is high