1. Caries indicator is made from special dye 2. It stains protein ensures uninfected areas is not stained 3. Identifies carious dentin so you can ensure the maximum amount of inner dentin is preserved and infected dentin is removed 4. Identifies carious dentin ensures the maximum amount of inner dentin is preserved and infected dentin is removed. 5. Easily locate root canal orifices and calcified canals.