Massachusetts Board of Cosmetology Practice Exam 2025 - Free Cosmetology Practice Questions and Study Guide

The most effective product for combating frizz in humid conditions is an anti-frizz serum. This type of serum specifically targets frizz by smoothing the hair's cuticle and providing a barrier against humidity. Anti-frizz serums usually contain silicones or oils that coat the hair, helping to lock in moisture and prevent the hair from becoming frizzy when exposed to humid air.

While other products like hair gel and hair spray may provide some hold or styling benefits, they do not specifically address frizz caused by humidity. Hair gel can sometimes make hair feel crunchy, and hair spray is typically used to finish styles rather than control frizz. Moisturizers can help with overall hair health but are not specifically formulated to combat frizz in humid conditions like an anti-frizz serum is. Therefore, for effectively managing frizz and maintaining a smooth style in humid weather, an anti-frizz serum is the ideal choice.