LASER is an acronym for “light amplification by stimulated emission of radiation”. The laser beam is a light with high energy. When it is focused on skin, heat is produced and it destroys the cells which are diseased. Laser rejuvenation or laser resurfacing is a non surgical procedure that utilizes a focused laser beam to improve the texture and appearance of the skin and also to improve the condition of the flaws. There are various advantages of laser rejuvenation process. It can greatly reduce the facial lines. Also laser rejuvenation can help skin damaged by the sun. Scars left on the skin due to acne or some accident can also be treated by this laser resurfacing.
What are types of lasers?
Lasers can be broadly classified in to two categories:-
- Ablative lasers: – ablative lasers are also known as wounding lasers. These types of lasers remove the skin. It is one of most commonly used as well as effective resurfacing procedure for treatment of aging skin. In this procedure, the area of the skin which is to be treated is targeted with a high intensity wavelength. This ablative laser beam removes the thin layer of skin which is damaged by sun. After the skin is peeled off, new and rejuvenated tight skin forms. This form of treatment, however, is not suitable for deeply wrinkled and sagging skin. The effects are not permanent in the long run. This procedure is done by a surgeon in a hospital/clinic. Sometimes the patient may be mildly sedated to help alleviate the pain.
- Non ablative lasers: – non ablative lasers are also known as non wounding lasers. This type of laser rejuvenation is less invasive in comparison to ablative laser. The results are better with ablative laser resurfacing. This procedure for skin rejuvenation is aimed to reduce wrinkles, minor scars and brown spots that are left behind by acne. It rejuvenates the skin without injuring the surface of the skin. The non ablative laser produces heat in the skin which in turn stimulates collagen which tightens the skin. A fractional approach is utilized with non ablative laser which means the heat is provided to the skin without any interference of normal skin. This is done through tiny columns known as micro thermal treatment zones. This allows for faster healing as only the skin which requires attention is treated as opposed to the entire face.
What are the other types of Lasers?
Some other types of Lasers are:-
- CO2 Laser resurfacing: – it is one of the most widely used methods of laser resurfacing which has been in use for over 20 years. It is the ideal laser resurfacing method for treatment for scars. The CO2 laser can be used either for fractional resurfacing, full resurfacing or it can be used in a combination of both. It gives phenomenal results in acne scars. It is better suited for people with light skin. A full surface rejuvenation can give really long lasting results. Due to the internal mechanism and working of CO2 laser, the collagen can be remodeled in a controlled manner. The time taken from CO2 fractional treatment is about a week whereas full CO2 ablation can take anywhere from 12 days to a fortnight to heal completely.
- Erbium laser: – the laser rejuvenation involving erbium laser can help the skin to look dramatically better. Erbium laser can treat moderately deep wrinkles as well as superficial lines. In comparison to a CO2 laser, the effects of erbium laser are shallow. The laser rejuvenation with erbium laser is much faster and has fewer side effects.
- Pulsed dye laser: – a pulsed dye laser is the laser in which a dye is mixed in the solvent which makes the lasing medium. Some types of dyes that are used to make pulsed dye laser are tetracene, malachite, coumarin, fluorescein etc. the pulsed dye laser uses selective thermolysis as the working principle. When the pulsed dye laser targets the skin it is either absorbed or reflected. Generally, the hemoglobin in the blood is affected by the pulsed dye laser.
- Nd: YAG laser:- Nd:YAG stands for neodymium- doped yttrium aluminium garnet which is a type of crystal used as a medium for solid state lasers. The Nd: YAG laser have higher capacity to reach the deeper layers of skin and have the wavelength of 1064nm. The Nd: YAG laser can treat vascular birthmarks. Facial veins and varicose veins can also be treated by the Nd: YAG laser. For treatment of darker skin tones, double frequency Nd: YAG laser is used. Double frequency Nd: YAG laser is used on pigmented lesions. With the double frequency ND: YAG laser have shorter wavelength which are better absorbed by pigmented lesions. The double frequency Nd: YAG laser is used for tattoo removal with the help of different wavelengths falling in the infrared as well as the ultra violet spectrum.
Before After Photos
Although treatment of skin with laser is a cosmetic procedure, it should only be performed by a skilled surgeon. A qualified surgeon will communicate openly about the procedure, as well as give suitable pre- operative and post- operative precautions.