Scalp Circulation Improvement Injection relaxes scalp fascia tension and restores capillary blood flow, creating an environment where hair follicles receive sufficient oxygen and nutrients. It is especially effective for stress-related hair loss and autonomic nervous system imbalance-related hair loss, and shows higher treatment response rates when combined with hair loss medication and follicle strengthening injections (HairON CHECK injection). It should be understood as a treatment that improves the environment that worsens hair loss.