Long-pulse laser devices are considered as exemplary for rapid hair removal and are widely accepted and utilised in the market. Long-pulse lasers emit laser light with specific wavelengths to target particular tissues within the skin. Their therapeutic principles as the following aspects:
- Selective photothermal effect: The laser energy is absorbed by specific pigments (such as melanin) or hemoglobin in the skin and converted into heat energy, thereby destroying the target tissue.
- Stimulating collagen proliferation: Long pulse lasers can penetrate deep into the dermis, stimulate fibroblast proliferation, and promote collagen production, thereby improving the elasticity and firmness of the skin.
- Thermal effect: By controlling the pulse width and energy of the laser, the target tissue can be precisely heated to reduce damage to surrounding healthy tissues.
What should be prepared for hair removal?
- Shave the treatment area cleanly with a razor the day before treatment.
- During treatment, hold the handpiece vertically and press it firmly against the skin. Treat each spot sequentially (e.g. top to bottom, left to right), ensuring approximately 10%-20% overlap between spots to avoid missed areas. Continuously monitor the skin’s response. Normal reactions include the appearance of white smoke from the hair shaft, a burnt odour (indicating follicle destruction), and mild redness on the skin.
- After treatment, gently wipe away excess carbonised hair with soft tissue paper. Immediately apply cold compresses (e.g., ice packs or medical cooling sheets) to the treated area for 15-20 minutes to mitigate thermal damage, soothe the skin, and alleviate redness, swelling, and discomfort.
- Post-treatment maintenance requires strict sun protection, gentle cleansing, and rigorous skincare. Allow one to three weeks for hair to shed naturally. Treatments are typically spaced 4–8 weeks apart (4–6 weeks for facial hair, 6–8 weeks for body hair) to ensure subsequent sessions effectively target hair in the active growth phase.
FAQ：
When can I see results?
The results from Long-pulse laser treatment usually show after 2 to 4 treatment sessions. It is also possible for some patients to see slight results after the first session.
Are the treatments painful?
There is usually minimal discomfort during the treatment as the treatment comes with a built in cooling system to alleviate the heating sensation. Before the treatment, you also can apply topical anaesthesia (numbing cream) if needed. Operactors can also adjust the laser settings based on the patient’s preference to minimise discomfort.
Is there any downtime after the treatment?
Some patients may experience mild redness after the treatment. This will usually subside within a few hours or a day.
What are the contraindications?
a.With a personal history of skin cancer, such as melanoma.
b.With infected “target” tattoo site or adjacent areas.
c.With photosensitivity in the 755 nanometer region.
d.Using medication for which infra-red light is a contraindication.
Key Benefits of UNT ND Long Plused Nd yag laser:
- Safety system：Handle equiped a fibre optic insertion position detector.
- Higher fluences and shorter pulse duration: 0.3-100ms pulse duration adjustable, providing efficacy and safety in treating unwanted hair and pigmented lesions and lesions on a wide range of skin types.
- High repetition rates: Repeat frequency up to 10Hz, delivering laser pulses faster allows for quicker and more convenient treatment times, benefitting both opatients and providers.
- Energy stability: RMS ≤ 5%
- UNT use Air cooling , no consumble parts.
How to protect fiber from destroy
Avoid Contamination
Remove dust cap before inserting optical fibre into the laser mount and secure it quickly; replace dust cap immediately upon removal, completing both actions within 10 seconds to prevent contamination.
Avoid Knocking
Install optical fibre carefully as specified to prevent damage; store properly when not in use.
Avoid Bending
Maintain bending radii over 120mm for 1.2mm core and over 150mm for 1.5mm core fibres; avoid forceful actions.
Other Functions:
Long pulse lasers are widely used in medical cosmetology, except hair removal mainly in the following aspects:
- Skin rejuvenation: by stimulating the production of collagen, improving the texture and elasticity of the skin, reducing fine lines and wrinkles.
- Speckle removal: for pigmentation problems such as freckles and age spots, destroying melanin through selective photothermal action.
- Treatment of vascular skin diseases: such as port wine stains and capillary dilation, lasers act on hemoglobin to reduce vascular dilation.
