What product is key for taming frizz?

A smoothing serum is key for taming frizz as it is specifically formulated to coat the hair strands, providing a protective layer that helps to reduce humidity's effects. These serums often contain silicone or similar ingredients that create a sleek barrier, allowing the hair to lay flat and appear shiny. Smoothing serums not only help manage frizz but also add a polished finish to the hair, making them particularly effective for those looking to achieve a smooth, styled look.

While hair gel can provide hold, it is not designed to address frizz specifically and may even contribute to a stiffer appearance. Conditioner helps with moisture and hydration but does not necessarily reduce frizz on its own. Leave-in treatments can aid in moisture retention and may help with some frizz, but they often don't provide the same smoothing effect that a dedicated smoothing serum would deliver. Thus, the smoothing serum stands out as the most effective product for controlling frizz.