This is a set of 12 bottles. It doesn't cause eye irritation, so you can use it with peace of mind. This is a disinfectant and deodorizer for use in humidifiers, using platinum. I used it in a steam cleaner to deodorize futons. Steam cleaners generally can't use oil-based deodorizers, so this is very useful. Although unopened, the box has some dirt and damage. It's sealed with tape and I haven't opened the contents, so I can't take responsibility for initial defects. Online, they sell for around 900 yen each, so I'm offering them at a very low price. #Platinum #Sterilization #Disinfection #Deodorizer #ForHumidifiers #SteamCleaner