The Efficacy of Microfocused Ultrasound Technique in the Treatment of Facial Skin Laxity

Inclusion Criteria: healthy male or female, aged 30-60 years, seeking improved jawline definition, and/or reduction of submental skin laxity and were willing and able to provide informed consent. Exclusion Criteria: Pregnancy or lactation, severe sun damage, excessive skin laxity on the lower face and neck, keloid scarring or open wounds in the treatment areas, severe or cystic facial acne, history of cosmetic treatments in the area to be treated (skin tightening procedure within the past year; injectable filler or botox within the past 6 months; ablative or nonablative resurfacing/rejuvenating laser treatment or light treatment within the past 6 months; dermabrasion or deep facial peels within the past 6 months), isotretinoin treatment within the past 6 months, and inability to understand the treatment protocol or to give informed consent.