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No, It requires filling a small reservoir with mouthwash to operate. I can't answer whether it uses "sonic waves". Here is a link to a 2017 YouTube video that explains the essentials: https://www.youtube.com/watch?v=VIBcd7bccqo
Hello! No, the Philips Sonicare Air floss requires water in order to operate.
Sorry I have not tried to use it without water. It does shoot air not sure if it is intended to be used without water.