What is a cosmetic solution that can stimulate the scalp or correct a scalp condition?

A hair tonic is designed specifically to stimulate the scalp and help correct various scalp conditions. These products often contain active ingredients that promote blood circulation, nourish hair follicles, and provide essential nutrients to the scalp, which can be beneficial for overall scalp health and hair growth.

In contrast, a hair gel primarily serves as a styling product, providing hold and control for various hairstyles but does not have therapeutic benefits for the scalp. A scalp scrub focuses on exfoliating the scalp to remove dead skin and product buildup, which supports cleanliness but does not inherently stimulate the scalp or treat conditions. Mousse is another styling aid, providing volume and texture without addressing scalp health directly. Therefore, hair tonic is the most appropriate choice when seeking a cosmetic solution for scalp stimulation or correction of scalp conditions.