Laser Lightsheer Duet

Diode laser Lightsheer Duet produced by American company – Lumenis, is currently state of the art and the best device for laser hair removal in the world, and consequently, offering the best results of epilation. The method of laser hair removal is permanent, safe and practically painless. It is a non-invasive technique, which does not damage skin. Lightsheer Duet is a revolutionary and reliable device, guaranteeing effectiveness and desired results. It saves patient’s pain, unpleasant and time-consuming recovery and it completely solves the problem of unwanted body hair. LightSheer Duet system is equipped with two heads emitting diode laser light with a wavelength of 800 nm, which enables high-speed and safe treatment, also in patients with dark complexion and tanned skin.

Why LightSheer Duet Laser? Benefits for patients.

There are at least a few systems for hair removal available on the market, and they largely differ in effectiveness. We offer our patients a top level service. Our priorities while choosing the right laser were the following:

– maximum efficiency
– safety
– comfort for the patient
– short time of a single session
– relatively small number of treatments to achieve satisfying results

Diode laser Lightsheer Duet is the top level device for unwanted body hair removal. The company exists from 1966 and is the worldwide leader in medical and cosmetic laser systems. Diode Laser System has a safety and quality certificate issued by the U.S. FDA (U.S. Department of the Food and Drug Administration), respected around the world.

The latest version of LightSheer – LightSheer Duet – consists of two hand pieces:

LightSheer ET treatment head – to maximise the treatment safety, the hand piece has a unique cooling system, the so-called ChillTip. It is integrated in the small head and in this way, the treatment is skin friendly, comfortable and protects the skin during the treatment, making the procedure less painful. All the time during the session, the temperature of the sapphire tip is maintained at 4°C. In this way, it is a much more efficient cooling, compared with the solutions applied in other devices for hair removal (air-cooling, gels, etc.);

LightSheer HS treatment head – entirely new, innovative technology, combining large spot size of 22×35 mm with vacuum pressure, which acts analgesically and increases penetration of the laser beam, deeply into the hair follicle. LightSheer HS reduces treatment time of leg hair removal from about 2 hours to about 30 minutes;

Comparison of spot sizes and the depths of laser beam penetration in two LightSheer Duet handpieces:

LightSheer Duet has regulated pulse duration from 30 to 400 ms, which enables performance of reliable treatments of hair removal for all skin phototypes (I-VI, according to the Fitzpatrick Skin Types) including the suntanned skins.

Benchmark tests for lasers:

1. Ruby laser – wavelength 694 nm, applied energy form 10 to 60J/cm2, pulse duration from 0,05 to 22 ms, spot size 4×10 mm.

2. Alexandrite laser – wavelength 755 nm, applied energy form 25 to 40 J/cm2, pulse duration from 2 to 20 ms, spot size 5×10 mm.

3. Nd-Yag laser – wavelength 1064 nm, applied energy form 2.5 to 40 J/cm2, pulse duration from 15 to 50 ms, spot size 7 mm.

4. Diode laser of „older generation” – wavelength 810 nm, applied energy form 40 to 60 J/cm2, pulse duration from 30 to 100 ms, spot size 9×9 mm or 12×12 mm.

5. Diode laser of „new generation” – LightSheer Duet – wavelength 800 nm, energy: small head up to 100 J/cm2, large head up to 12 J/cm2, pulse duration from 30 to 400 ms, spot size – in large head 22×35 mm.

Mechanism of action of the laser light on the hair follicle and hair

Laser applied for hair removal operates superficially and does not affect the whole body functioning. The laser beam, directed to the skin, penetrates 2 mm into the skin, which causes firstly, damaging the hair follicle and then its gradual disappearance, which in turn leads to the hair loss. The laser-emitted radiation is absorbed by the melanin of the hair follicle and skin. Appropriate pulse length destroys the targeted melanin, thereby resulting in loss of stem cells of the hair follicles and the hair vanish without a trace.
With the small laser head, a single laser shot is enough to eliminate several or even more hair, located on the skin surface of a 9×9 mm spot. Laser hair removal is a gradual process, which reduces hair, spot after spot.

The large laser head operates a different mechanism:

1) vcuum gently draws skin into hand piece, causing reduction in density of melanocytes in the skin, and, as a result. less energy is absorbed by the epidermis and more by the hair melanin,

2) vacuum pressure eliminates the perception of the nerve endings and so the treatment is almost painless,

3) vacuum pressure constricts blood vessels and less energy is absorbed by oxyhemoglobin;

When is laser hair removal applied?

– to eliminate unwanted hair resulting from endocrine disorders – hirsutism, hypertrichosis,
– for cosmetic purposes – all body areas,
– in patients with ingrown hair symptoms, occuring after other methods of epilation,
– in patients with vascular lesions on legs,
– patients with sensitive skin, who experience skin inflammation effect (redness) after waxing, shaving or chemical epilation,
– the treatment is suitable for men in cases of skin hypersensitivity after shaving (thinning out),

Laser hair removal – effects

Not all hair grows simultaneously. A part of it is always in the active stage of growth (anagen phase) – it’s hair that can be seen on the skin surface. Only the hair being in the growth phase may be destroyed by the laser light. The remaining hair remains dormant (telogen phase), anywhere from 3–8 weeks. The telogen phase is followed by the growth phase (anagen), when the hair may be again actively destroyed with laser. Therefore, the sessions of laser hair removal need to be repeated (about 4-6 times) in order to eliminate nearly all hair. During the first treatment with LigtSheer laser, about 20%-30% of hair is removed, while after a series of sessions – up to 90%. The remaining hair is distinctly lighter, softer and almost invisible and usually do not bother patients. Considering the earlier undergone treatments of wax epilation, hair removal with mechanical epilator or a tweezer, etc. or in the case of excessive hair caused by hormonal disorders, it may be sometimes necessary to undergo more sessions of laser hair removal, in order to obtain even better results, and then take maintaining sessions, e.g. once a year.

anagen hair before	anagen hair immediately after