COSLUS is one of the marketplace brands that turned the cordless flosser into a cheap everyday item. The popular models are small, IPX7 rated, hold about 300 ml and run three modes, normal, soft and pulse, with the soft one aimed at people whose gums bleed in the first week of treatment. The company sells replacement tips and even separate parts through its own store, which is rare at this price.
A sensible first flosser: low outlay, easy to hand to a teenager, easy to replace if it is dropped. It will not match a mains unit on force, the tank empties quickly when cleaning around a full set of brackets, and the charging port cover is the part that usually gives up first. Support answers on weekdays by email and there is a toll free line.
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