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NONABLATIVE NONFRACTIONATED LASERS
NONABLATIVE NONFRACTIONATED LASERS
The development of nonablative nonfractionated lasers near the end of the twentieth century provided an alternative to ablative laser devices. Devices include the 1,450-nm diode (Candela Smoothbeam), 1,320-nm Nd:YAG (CoolTouch CT3Plus and Alma Harmony XL), and 1,319-nm pulsed energy (Sciton ThermaScan). Nonablative lasers use milder heat that will not vaporize tissue, but will denature target proteins, such as dermal collagen. In contrast to their ablative brethren, nonablative nonfractionated lasers produce less radical cosmetic results per treatment, but have drastically reduced healing times, which may limit erythema to a single post-treatment afternoon.8,9 As with ablative nonfractionated lasers, 80% of patients treated with nonablative nonfractional lasers will develop a transient acneiform eruption, and 14% develop transient milia.10 An additional benefit of nonablative lasers is a decreased risk of hypopigmentation in darker skin types (Fitzpatrick skin types V and VI), as compared to ablative lasers.11