ARTICLE | LASERS AND LIGHTS |
Figure 6 Clinical example of hair removal with the LightSheer Duet. (A) before and (B) after treatment
with these lasers were minimal, and darker skinned individuals were successfully treated. Others have also looked at the diode laser systems and shown them to be effective in long-term hair removal19–24
. The two most popular diode laser systems currently on
the market are the LightSheer and LightSheer Duet (Lumenis Aesthetic), as well as the Soprano and Soprano XL SHR (Alma Lasers). The LightSheer is an 810 nm diode laser with variable pulse widths (5–400 ms) allowing for the safe treatment of all skin types. The spot size on the original LightSheer is 12 x 12 mm and has a repetition rate of 2 Hz. It has fluence capabilities of 10–60 J/cm2
. In its Clinical studies have proven the safety and efficacy
of diode lasers for the long-term removal of hair. Studies by Dierickx et al and Handrick and Alster showed that with
the use of the diode lasers, hair removal reduction rates
of upwards of 90% could be achieved.
now one of the premier laser systems on the market.
Davoudi et al evaluated the system and found its success in laser hair removal16 Figures 4 and 5.
. Clinical examples are shown in
Diode lasers Diode lasers are solid-state laser devices that have been well received and are used regularly in the laser hair removal arena. Diode lasers penetrate deeper than the alexandrite lasers into the skin and have been FDA cleared to treat all skin types and even tanned skin. These devices use sophisticated cooling apparatus, usually on the tip of the laser device, and are safe and effective. Clinical studies have proven the safety and efficacy of
diode lasers for the long-term removal of hair. Studies by Dierickx et al17
and Handrick and Alster18 showed that
with the use of the diode lasers, hair removal reduction rates of upwards of 90% could be achieved. Side-effects
Figure 7 Clinical example of hair removal using the LightSheer Duet. (A) before and (B) after treatment
original form, it had a specifically designed sapphire tip for epidermal cooling. In the new form of the device, known as the LightSheer Duet, in addition to the original LightSheer (ET handpiece with spot size of 9 x 9 mm), one also has the added benefit of a second handpiece known as LightSheer HS (i.e. high speed). This handpiece has a spot size of 23 x 35 mm and gently draws the tissue into a vacuum with a gold-plated chamber to bring the targets closer to the light
source. As a result, lower fluences can be used, which also makes the machine safe for all skin types. The fluence for the HS handpiece operates up to 12 J/cm2
. The handpiece
is also concave in orientation, allowing the redirection of reflected light back into the skin, enabling more photons to reach the intended chromophores. The initial clinical trials with the LightSheer Duet showed its effectiveness25, 26
.
This new system has been compared with the original system in a number of clinical reports, showing that similar efficacy data can be achieved while increasing the speed of the therapy, decreasing the pain (as seen with the vacuum technology), and keeping adverse events to a minimum27, 28
. Clinical examples for the LightSheer Duet
are shown in Figures 6 and 7. The second device commonly used for laser hair
removal in the diode family is the Soprano, and the Soprano XL SHR. It is also an 810 nm diode laser and has been shown to be effective in the long-term reduction of hair. It uses an
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March 2012 |
prime-journal.com
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