This is a mouthwash called Kirehaku Lens, from the company ninall. I saw it in a YouTube ad and purchased it on a recurring basis, but I couldn't keep up with it and ended up with a surplus. I can't use it all, so I'm offering it to anyone who wants to try it. If you're interested, why not take this opportunity? Regular price: About 5400 yen per pack Features: Whitening, breath odor control/prevention, periodontal disease prevention Target audience: Adults Features: Whitening, breath odor control/prevention