An oral appliance cleaner developed in collaboration with dentists. Dentures require daily care. Brushing with a toothbrush (toothpaste) or disinfecting with boiling water may damage or deform the material. Our oral appliance cleaner is effective in cleaning, disinfecting, and deodorizing dentures with the power of oxygen without damaging them, and contains no surfactants, dyes, preservatives, or abrasives. They can be used safely not only on dentures, but also on retainers, mouthpieces, and various other oral appliances.