Can hydrogen peroxide solution be used as a mouthwash?

Yes, it is acceptable—but the undiluted solution must not be used. Instead, dilute it with clean water and rinse your mouth with the diluted hydrogen peroxide solution, which exerts anti-inflammatory and antibacterial effects without irritating or burning the oral mucosa. Low-concentration hydrogen peroxide mouth rinses help kill oral bacteria and remove debris from the mouth, thereby aiding oral hygiene and reducing halitosis. However, please note that long-term reliance on hydrogen peroxide mouth rinses should be avoided, as it may disrupt the natural balance of oral microbiota and lead to various oral health problems.