The Efficacy of Nanofractional Radiofrequency Device in Arm Rejuvenation and Tightening : a Pilot Study

Inclusion Criteria: * 1\. Healthy female or male subjects, at least 30-60 years old of age 2. Subject who has BMI 18.50- 25 kg/m2 (as picture criteria above) 3. Subject has clinically evident moderate skin laxity with or without wrinkle on the upper arm 4. Subject has read and signed a written informed consent form. Exclusion Criteria: \- 1. Patient with weight loss \> 15% 2. Pregnancy or Lactation 3. History of pacemaker, defibrillator 4. History of laser resurfacing, prior radiofrequency, ultrasound or focused ultrasound on treatment areas within 1 year on the treatment area 5. History of Heat sensitivity, collagen vascular disorder disease including morphea, scleroderma, heat contact urticaria 6. History of medical illness that primary investigator thinks could interfere or influence the wound healing process 7. History of abnormal scars (keloid, hypertrophic scars) 8. History of skin cancer, radiation therapy or metal implants on treatment areas 9. Active local or systemic infection on treatment areas 10. Any other conditions that would, in the professional opinion of the investigator, potentially affect the subject's response or the integrity of the data or would pose an unacceptable risk to the subject. 11\. Subject is unable or unwilling to comply with the study requirements. 12. Subject is currently enrolled in a clinical study of any other unapproved investigational drug or device.