Since 1996, hyaluronic acid (HA) has been launched onto the market in Europe. Since then, different companies proposed their HAs. Biomatrix (NJ, USA) proposes an animal-derived HA (from rooster comb). Q–Med AB (Uppsala, Sweden) and LEA-DERM (Paris, France) are the main companies to have a nonanimal HA.
This chapter will attempt to sort through the muddle by exploring hair follicle biology as well as the scientific underpinnings of hair removal by light before examining the attributes of specific laser systems. A detailed discussion of treatment guidelines as well as preoperative and postoperative considerations follows.
The demand for noninvasive skin tightening procedures is increasing as patients seek safe
and effective alternatives to aesthetic surgical procedures of the face, neck, and body. Over
the past decade, radiofrequency and infrared laser devices have been popularized owing to
their ability to deliver controlled heat to the dermis, stimulate neocollagenesis, and effect
modest tissue tightening with minimal recovery. However, these less invasive approaches
are historically associated with inferior efficacy so that surgery still remains the treatment
of choice to address moderate to severe tissue laxity. Microfocused ultrasound was
recently introduced as a novel energy modality for transcutaneous heat delivery that
reaches the deeper subdermal connective tissue in tightly focused zones at consistent
programmed depths. The goal is to produce a deeper wound healing response at multiple
levels with robust collagen remodeling and a more durable clinical response. The Ulthera
device (Ulthera, Inc, Meza, AZ), with refined microfocused ultrasound technology, has been
adapted specifically for skin tightening and lifting with little recovery or risk of complications
since its introduction in 2009. As clinical parameters are studied and optimized,
enhanced efficacy and consistency of clinical improvement is expected.
Semin Cutan Med Surg 32:18-25 © 2013 Frontline Medical Communications
Review of Nonablative Photorejuvenation: Reversal of the Aging Effects of the Sun and Environmental Damage Using Laser and Light Sources
This review article outlines all the latest light or electromagnetic radiation based technologies used for nonablative skin rejuvenation.