There are three hormones responsible for impacting your emotional state: dopamine, serotonin, and cortisol. Scalp massages can positively impact your body's production of dopamine and serotonin, increasing mood-boosting serotonin and dopamine, while decreasing cortisol.
In a study of female office workers, it was observed scalp massage had effects on stress hormones, blood pressure and heart rate. Stress is a contributor to hair loss.
Despite the relatively immobile cranium, small muscles around the head respond well to touch. And this part of the body is the closest to the brain, which processes sensations. The parts of the body that typically receive massage are the back and legs. [source: The Bodywise Clinic]
Massage helps ease muscle spasms and knots in parts of the body prone to tightness and tension. Obviously, the scalp and back of the head contain only small muscles that play no part in moving your body around or resisting heavy loads. But tension can build up in this area. New studies have found that the body’s response to touch near the head is more complex than we once thought. [source: The Bodywise Clinic]
Researchers tested a group of 24 female students for the effects of head massage on their well-being. The study found that head massage treatment reduced depression symptoms, decreased feelings of boredom, and positively influenced anxiety levels. Another benefit was the feeling of liveliness experienced by the participants. [source: The Bodywise Clinic]
There have been claims that scalp massage has resulted in visible improvement in their hair length and health. According to a 2016 study, nine men who received a 4-minute scalp massage each day over a 24-week period, resulted in visibly longer and thicker hair. A 2019 study with 340 participants supported those original findings by reproducing similar results.