What is the primary benefit highlighted in the advertisement for the frizz-resistant hair gel?

The primary benefit highlighted in the advertisement for the frizz-resistant hair gel is its ability to strengthen hair while effectively preventing frizz. This focus on frizz control is particularly important, as frizz can often be a significant concern for individuals with textured or curly hair. Strengthening the hair not only enhances its overall health but also contributes to a smoother appearance, reducing the likelihood of frizz. By addressing both aspects—strengthening the hair and offering frizz resistance—the advertisement emphasizes the gel's dual-functionality, making it an appealing option for consumers seeking to maintain manageable and well-conditioned hair.