Brand from Japan: seléct α. Targeting the Root Cause of Bad Breath.A Professional-Grade Solution for World-Class Fresh Breath.ProFresh is a brand dedicated to the prevention of bad breath, established by Dr. Jon L. Richter, a leading authority in halitosis research in the United States.ProFresh EX is a scientifically formulated mouthwash that neutralizes odor through the power of oxygen. It doesn't just mask bad breath — it tackles its root cause, inhibiting the growth of odor-causing bacteria to keep breath truly fresh.High Concentration & Fresh Activation for Maximum Effect.To ensure freshness and effectiveness, the product is activated upon opening by mixing a pH adjuster and cleansing solution, generating ClO₂ (chlorine dioxide). This process enhances its ability to eliminate bad breath, delivering noticeable results right after use.What is ClO₂ (Chlorine Dioxide).ClO₂ is a powerful oxidizing agent known for its safety, commonly used to bleach flour and purify drinking water.In the mouth,