Floss Threaders Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Oral-B is the best-performing floss threaders brand in July 2026, moving 80,000 units across 3 ASINs for 31.1% of Top 10 volume. COSLUS follows with 70,000 units (27.2%), ahead of Reach on 40,000 units (15.6%).

With 7 brands splitting the Top 10 and 73.9% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $3.75 to $29.93, which frames the price band a competing listing has to justify.

Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, one ASIN forced its way in: B01KZOTTSO booked 10K units at $21.24, with ▲ 400.0% MoM change. On the growth side, B0CQD8J54W leads positive momentum with ▲ 200.0% MoM growth on 30K units, with B06Y5ML9LR close behind at ▲ 200.0% MoM on 600 units.

The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.