The powerful and unique combination of zinc acetate and chlorhexidine in CB12 neutralises the formation of substances that cause unpleasant breath. The unique and patented formulation of CB12 binds with the lining of the mouth, teeth and tongue, ensuring up to 12 hours of long-lasting first class breath. Scientific studies using instruments specifically designed to detect the sulphurous gases at the root of unpleasant odours have proven that CB12 is effective. The clinical trials have proven that CB12 is safe, effective and long-lasting.