Exosomes for Hairloss Treatment

Inclusion Criteria: 1. Subjects are able to read documents and can sign informed consent. 2. 18\~75 years old (including the threshold), gender is not limited. 3. The subject's "hair loss grade" meets the following criteria: 1\) BASP grade: Basic type (M2 to M3, or C2 to C3, or U1 to U3) or special type (V1 to V3, or F1 to F3); 2) For female: Ludwig Grade I to II. Or for male: Hamilton-Norwood Grade III to IV; 3) Hair density by phototrichogram: ≤ 190 hair/cm² ; 4. Hair dryness ≥ 5%; 5. Until withdrawal/completion of the study, subjects agree not to undergo any topical treatment for hair loss and agree to use a neutral shampoo. Exclusion Criteria: 1. People with patchy or diffuse baldness, syphilitic alopecia, scarring alopecia, malnutrition, chemotherapy/radiotherapy-induced hair loss. 2. Those with a combination of diseases that have an impact on hair growth. 3. Use of medications, medicated shampoos, or hair care products that may interfere with efficacy evaluation within 3 months prior to screening (oral administration of therapeutic agents for androgenetic alopecia must be discontinued for at least 6 months). 4. Have received scalp radiation and/or laser or surgical therapy within 3 months prior to screening. 5. Participated or are participating in a interventional clinical trial within 3 months. 6. Persons with a history of hereditary alopecia areata. 7. Women who are pregnant or breastfeeding, or male/female subjects whose own/partner's pregnancy is planned within 6 months. 8. Have undergone hair transplantation in the previous 24 months. 9. Individuals testing positive for active infectious diseases or carriers of communicable pathogens. 10. Those with keloid, keloid-prone or hyperplastic scarring. 11. Those who, in the opinion of the investigator, are otherwise unfit to participate in this clinical study.