The types of lasers used for skin resurfacing
There are two types of lasers typically used for skin resurfacing: ablative and non-ablative. Ablative lasers remove the surface of the skin by burning the epidermal layer down to the next level, the dermis. The body responds during the healing process by producing more collagen, which generates new layers of skin.
Non-ablative lasers can focus specifically on tissues underneath the skin, using the laser wavelengths to target those spots without harming the surface. In place of the damaged skin, younger-looking and clearer skin develop. Also, because the laser is extremely precise, you'll likely face a shorter recovery time than with ablative laser treatments.
LASER stands for “Light Amplification by the Stimulated Emission of Radiation”. Lasers emit monochromatic (single wavelength) light through a very narrow beam or series of pulses. This laser beam carries energy to the skin, that is selectively absorbed by colored elements in it (ink particles or cells) that get heated up and shattered while avoiding damage to surrounding skin tissue and chromophores (such as hemoglobin and melanin).
This only works providing that the specific wavelength, energy level, and length of time are selected for the appropriate elements to be destroyed.
Use cases and procedures
Q-switched laser to fight hyperpigmentation
To be used in the destruction of tattoo ink particles, the NG Yag laser must be a Q-switched laser, which will pulse photons at very high power for very short increments of time (billionths of seconds) sending some electromagnetic waves of 1064 nm wavelength.
These are efficiently absorbed by the particles of black ink from tattoos. In the case of other inks, such are yellow, orange, pink and red, a filter is affixed to the laser to further increase the energy of the laser beam to 532 nanometers. When it comes to green and yellow tattoo ink, this laser may not be the most effective option.
The Q-Switched ND YAG laser works by targeting specific pigment in the skin, which targets the damaged skin cells in the treatment area. When it comes to laser tattoo removal, the Q-Switched ND YAG laser targets ink pigment and breaks it up into smaller particles through powerful bursts of energy. The ink is then absorbed into the bloodstream and eventually expelled from the body.
The Q-Switched ND YAG laser utilizes two energy frequencies; 1064 nanometers, to target deeper skin layers, and 532 nanometers, to address hyperpigmentation and more superficial layers.
Is Q-Switched ND YAG Laser Safe?
The Q-Switched ND YAG laser is a safe procedure when administered by an expert. All physicians hired at Metro Bangkok Clinic undergo extensive training with laser devices and can administer the latest treatment techniques safely and effectively.
How Long do Treatment Results Last?
Most of the patients will need several treatments with Q-Switched ND YAG laser to achieve optimal outcomes. The number of treatments will depend on the specific issue you are looking to address and the size of the treatment area.
For example, treatment of hyperpigmentation issues, like dark spots caused by sun damage, will typically need fewer sessions than tattoo removal.
What to Expect During Treatment?
When you visit Metro Bangkok Clinic for treatment with the Q-Switched ND YAG laser, our physician will first make a detailed assessment of your skin concerns, to ensure that this laser is the best skin treatment option in your situation.
Once the treatment begins, our physicians will numb the area with a topical cream or may use a local anesthetic to further reduce discomfort. You will also be provided with protective eye-wear.
Our physicians will then guide the laser across the treatment area, and deliver powerful bursts of energy to break down pigment. Some discomfort is common during this stage, as the laser will cause micro-damage in the skin.
However, most patients handle this procedure very well, and our physicians always work diligently to ensure maximum comfort.
Q-Switched ND YAG Laser Side Effects
After the procedure, you may notice redness and swelling in the treatment area. Some patients may also experience very mild bleeding at the treatment site. Aloe vera may be used on the skin after treatment, to soothe any discomfort.
It is also important to cover up the area with gauze, to help the skin heal faster. Over the coming days, you may notice some crusting at the treatment site, as the skin begins to heal.
To reduce the chances of scarring, it is vital to let the scab heal on its own, without attempting to remove it.