Most are gel-based: clear/transparent brow gels for taming and setting, and tinted brow mascaras (often with fibers) that tint and thicken hairs.
They fill and shape brows, tame and set brow hairs, and—in tinted formulas—tint and thicken hairs. Clear gels can also tame flyaways or be used as a clear mascara for a natural, lifted-lash look.
The listings cite wear times of up to 16 hours.
Tinted formulas are described as ultra‑buildable: plant-origin fibers allow layering to increase tint and thickness from subtle to much fuller.
Descriptions and reviews indicate a natural, smooth finish with little to no residue.