Ciao stains. Ciao discolouration. A charcoal toothpaste. It’s as black as night. But it gently whitens. The activated carbon simply absorbs unattractive, discoloured particles. Refreshingly lemony. «Black Is White» whitening toothpaste removes discolouration using activated carbon without abrading or bleaching. includes fluoride. Strengthens oral health: enzymes protect against tooth decay and support the salivary functions. Hydroxyapatite (nano) remineralize tooth enamel and seal exposed dentine channels.