Which product is best suited for controlling frizz in humid conditions?

A smoothing serum is best suited for controlling frizz in humid conditions because it typically contains silicones and other ingredients that create a protective barrier around the hair. This barrier helps to lock in moisture while repelling excess humidity, which is essential for preventing frizz. The coating also adds shine and smoothness, making the hair more manageable in damp environments.

In contrast, conditioners primarily focus on adding moisture and nourishment to the hair but may not effectively prevent frizz in high humidity. Gel can provide hold and styling, but it doesn't specifically target frizz control and may even make hair feel crunchy or stiff if not used properly. Dry shampoo is designed to absorb excess oil from the scalp and refresh hair between washes, but it does not address frizz or hydration, especially not in humid conditions. Therefore, a smoothing serum stands out as the ideal choice for managing frizz effectively.