PRIME Journal Vol. 12 Issue 1

38 January/February 2022 | F ACIAL REJUVENATION treatments have become increasingly popular with the advent of various interventions with shorter downtime and faster recovery, including the non-ablative fractional laser technology. This technology is based on the fractional delivery of beams of light in columns in a wavelength that is absorbed by tissue water but below the vaporising threshold and typically in the near infrared range of 1200 and 1600nm 1 . The resultant tissue interaction leads to thermal coagulation of the epidermis and dermis (depth related to wavelength and fluence used) with ultimately a wound healing process that translates into visible clinical improvements in aspects of photoaging and photodamage such as texture, fine lines, and wrinkles. There are currently several devices in the market with wavelengths in this range with various specifications including the Candela handpiece of Frax 1550nm with unique features such as the in-built cooling system and an adjustable scanner width 2 . The 1550nm treatment has largely become one of the most sought after non-ablative fractional laser treatments. Firas Al-Niaimi evaluates the latest non-ablative fractional laser technology in two clinical cases of photodamaged skin PROMOTION ADVANCED SUPERFICIAL RESURFACING WITH A NOVELFRACTIONAL HANDPIECE: FRAX 1940 The newFrax 1940nmhandpiece Candela’s newest handpiece device, the Frax 1940, is a major advancement in the field of non- ablative fractional laser technology with very little matched technology available to date. The technology relies on a solid state diode emitting a 1940nm wavelength in a scanning mode with in-built cooling (Softcool). This wavelength is unique since it lies very close to the peak of the water absorption wavelength in the non-ablative range just below the ablative threshold (1935nm). This results in a unique avid light-tissue interaction with water with a superficially located biological interaction manifesting as coagulation and epidermal and superficial papillary dermal injury 3 . Microscopic Epidermal Necrotic Debris (also known as MENDs) lead to epidermal renewal and pigment clearance, and together with the superficial nature of the injury this leads to clinically visible improvements in tone, texture, and superficial pigment clearance. There are currently very few available technologies aside from ablative lasers that have such a marked impact on the epidermis giving clinical results described by patients as: ‘glowing skin’, ‘smoother skin’, and a ‘porcelain feel’ of the treated skin. Features of the Frax 1940nmhandpiece The handpiece is relatively light and ergonomically friendly with an PROF. FIRAS AL-NIAIMI, MD , Dermatologist; London, UK Figure 1 Case 1: (A) Before, (B) after treatment