Igk Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

K18 is the best-performing igk brand in July 2026, moving 50,000 units across 1 ASIN for 39.7% of Top 10 volume. COLOR WOW follows with 30,000 units (23.8%), ahead of Olaplex on 20,000 units (15.9%).

With 5 brands splitting the Top 10 and 79.4% 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 $29.00 to $30.00, 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: B0GRC4NXGS booked 3K units at $38.00, with ▲ 233.3% MoM change. On the growth side, B0FMGNYX85 leads positive momentum with ▲ 150.0% MoM growth on 500 units, with B0GRBZRZTX close behind at ▲ 33.3% MoM on 400 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.