Lasers joined medicine in the 1960s. Since then, they have revolutionized cosmetic standards, becoming a permanent part of the industry. Laser methods in Skincare are a field that is developing intensively. Popular laser procedures include, among others laser closing of capillaries, photorejuvenation, laser hair removal or laser acne therapy.
What is a laser?
The laser is a generator of coherent, electromagnetic waves in the ultraviolet range, it concerns visible light and infrared light. Its name is an acronym created from the English expression Light Amplification by Stimulated Emission of Radiation (light amplification through forced emission of radiation). The obtained light has characteristic features that are impossible to achieve in other conditions and emission sources. These properties are Extremely important, considering the use of lasers – including cosmetic uses.
The three most important features that allow the use of lasers in medicine and cosmetology and other areas of human activity are listed:
- beam coherence in time and space, in other words – phase-spatial order;
- monochrome – very slight divergence of spectral emission lines;
- parallelism – enabling optical systems to easily focus the light beam.
The impact of lasers on human tissues is carried out according to a certain standard, which is accompanied by reflection of light, followed by its dispersion, transmission and partial or complete absorption. This, in turn, causes Skin reactions, understood as photochemical and biostimulative.
Laser cosmetic treatments
- Laser closing of blood vessels
Due to discomfort and soreness, laser vascular occlusion is usually performed under anesthesia. Using a laser, the cosmetologist makes several shots into the dilated capillary, leaving a slight bruising and erythema, which usually lasts up to several days after the surgery.
- Laser acne therapy
The main purpose of light therapy in laser acne therapy is to destroy the bacteria that cause inflammation. These bacteria release porphyrins i.e. dyes that absorb light waves in the blue light range. It is associated with the formation of free radicals that destroy bacterial cells.
For photorejuvenation, a doctor or cosmetologist irradiates the skin, causing fibroblasts to stimulate collagen and elastin production.
Dermabrasion is another, much more serious method. It is an invasive procedure performed under general anesthesia by specialized medical staff. It includes evaporation of individual layers of the epidermis to the depth of the dermis, removing wrinkles, scars and discoloration.
- Laser discoloration removal
Skin discoloration can appear for a variety of reasons, they are a local, concentrated accumulation of a pigment called melanin. During the laser removal of hyperpigmentation, these areas are exposed to light, in turn the light is absorbed by the darker dye. Melanin absorbs light energy and breaks down pigment changes into much smaller fragments that the body removes.
- Laser hair removal
Laser hair removal is a method especially recommended for those who with more conventional methods of hair removal develop irritations in the form of inflammation of the hair follicles. The radiation beam that the laser emits absorbs the dark dye in the hair (hence it is much easier to remove dark hair with this method).