Archaeologists have discovered a rare artifact that is found throughout the Bible's Old Testament. They discovered a 3,800-year-old textile colored with 'scarlet worm,' a dye that is mentioned 25 ...

The shell of the female cochineal contains a vibrant red chemical called carminic acid. Carminic acid's color is pH-dependent. For a more orange-red, you can lower the pH (make it more acidic). To ...

Carmine is a widely used pigment derived from gravid cochineal insects. Carminic acid is the source of its color. Only two previous publications describing allergic contact dermatitis from carmine ...