Teeth Whitening Pen Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Crest is the best-performing teeth whitening pen brand in July 2026, moving 167,000 units across 5 ASINs for 73.6% of Top 10 volume. INOPRO / follows with 20,000 units (8.8%), ahead of Opalescence on 20,000 units (8.8%).

With 5 brands splitting the Top 10 and 91.2% 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 $26.62 to $56.45, 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: B00ZKLLZAI booked 7K units at $8.98, with ▼ 22.2% MoM change. On the growth side, B0GHDTC7XV leads positive momentum with ▲ 400.0% MoM growth on 500 units, with B0D9C16FQ8 close behind at ▲ 200.0% MoM on 300 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.