Exosome Therapy for Male Androgenetic Alopecia

Inclusion Criteria Participants must meet all of the following criteria to be eligible for enrollment: 1. Male subjects aged 18 to 55 years; 2. Diagnosis of androgenetic alopecia classified as Norwood-Hamilton grade III-V; 3. Stable pattern of hair loss for at least 6 months prior to screening; 4. Willingness to refrain from using any other hair loss treatments during the study period and for 6 months after completion of treatment. Exclusion Criteria Participants meeting any of the following criteria will be excluded: 1. Other types of alopecia, including alopecia areata, cicatricial alopecia, or telogen effluvium; 2. Use of minoxidil, finasteride, spironolactone, or other hair growth-related medications within 1 year prior to screening; 3. Receipt of platelet-rich plasma (PRP), laser cap therapy, or other scalp procedures within 6 months prior to screening; 4. History of autoimmune disease, active scalp infection, coagulation disorders, or malignancy; 5. Known hypersensitivity to the investigational product or any of its components; 6. Inability to comply with study procedures, incomplete clinical data, or conditions that may interfere with efficacy evaluation; 7. Participation in another clinical trial within the study period; 8. Any condition that, in the opinion of the investigator, makes the participant unsuitable for the study.