To evaluate the efficacy of novel noninvasive RF technology for reduction of submental fat.

Recently, Novel radiofrequency (RF) technology was introduced as a promising tool for non-invasive body and face contouring, which can heats subcutaneous fat up to 45℃ continuously without surface damage and induces adipocytes apoptosis.

Subjects with an excessive subcutaneous fat on the submental area received twice treatments at 1-month intervals. Clinical outcomes including the thickness of the submental fat (measured by ultrasound) and the submental circumference (measured by a tape measure), and clinical photographs were obtained at baseline, and 1-month and 6-month after last treatment.

Inclusion Criteria:

• clinically appreciable localized excess of subcutaneous fat on the submental area
• no history of systemic underlying disease

Exclusion Criteria:

• any infectious or inflammatory skin diseases

• keloids

• psychiatric patients

• systemic underlying disease

• who had taken aesthetic procedure on the face, before 6-month

  • more than 5% weight change were dropped out.