Evaluating the Long-term Effects of Microfocused Ultrasound on Facial Tightening Using Quantitative Instruments

Inclusion Criteria: 1. Ages between 25 and 60 years old. 2. Clear manifested skin issues such as sagging and wrinkles: Merz Facial Aesthetics Score of 2 or above. 3. Absence of significant systemic diseases, cardiovascular disorders, impaired liver or kidney function, malignant tumors, etc. 4. Willing to participate in this study and sign an informed consent form. Exclusion Criteria: 1. Pregnant or lactating women. 2. Individuals with a scar-prone constitution, allergic or abnormally healing skin. 3. Treatment areas with damaged skin, acute inflammation, active infection, rosacea, vitiligo in the progressive stage, or severe acne. 4. Patients with skin conditions such as urticaria, itching, or other dermatological diseases. 5. Those with psychological disorders or drug allergies. 6. Individuals harboring unrealistic expectations about treatment outcomes. 7. Treatment areas containing metal foreign bodies or fillers deemed unsuitable for treatment by the physician. 8. Recent facial laser treatments or injections within the past month, including but not limited to filler treatments such as hyaluronic acid, botulinum toxin, and PRP injection therapy. 9. Any skin-tightening cosmetic treatments on the face or neck within the last three months. 10. Any minimally invasive cosmetic treatments on the face within the last three months. 11. Thread embedding treatments on the face within the last year, excluding thread blepharoplasty. 12. Patients with severe insomnia or those requiring intense sun exposure within the next three months. 13. Patients deemed unsuitable for participation by the investigator. 14. Those unable to cooperate with the treatment and complete all required visits.