In 1917, the great scientist Einstein predicted the existence of stimulated radiation and the possibility of optical amplification, and then established the basic theory of laser. In 1960, Mehman made the world's first laser, the ruby laser. Since then, a completely new light source has been born. In 1963, GoldmanL began to apply ruby lasers to benign skin lesions and tattoo treatments and succeeded, pioneering laser medical applications. So what are the applications of lasers in medical care?
Acne Treatment
When laser is applied to the skin, only the acne scar on the surface of the skin is subjected to laser action, and other tissues are not affected. These parts that are not subjected to laser action will accumulate more collagen and elastin, help the dermal collagen regeneration and rearrangement.
Skin Rejuvenation
The principle of laser treatment of skin photoaging is to produce a thermal effect by laser, so that after the dermis tissue is stimulated, new collagen tissue appears, thereby achieving the effect of firming and skin rejuvenation. Treatment methods can be divided into non-invasive treatment and minimally invasive treatment, wherein strong pulsed light and long pulsed Nd:YAG laser are non-invasive treatment.
Pigment Removal
The principle of pigment removal is to place the huge energy of the laser burst in the pigment tissue, breaking and decomposing the pigment, so that it can be swallowed by macrophages,excreted with the lymphatic circulation system. Then achieves the purpose of removing the pigment.
Wrinkle Removal
Laser wrinkles removal can absorb the energy released by the laser through the melanin and hemoglobin in the skin, especially water, and produce a photothermal effect to convert it into heat, thereby activating various stromal cells such as dermal fibroblasts are activated to produce new collagen, elastin and various intercellular matrices, and to undergo tissue remodeling.
Hair Removal
The principle of laser hair removal is the principle of selective thermodynamics.That is,the selected wavelength acts only on melanin and not on the normal tissue of the skin, and the selecte pulse width acts only on the melanin in the hair follicle and not on the melanin in the basal layer of the skin.
Freckle Removal
The laser includes krypton laser, argon ion laser, carbon dioxide laser, erbium-doped laser, dye laser, copper vapor laser, ruby laser, hydrogen laser, frequency doubled laser and so on.Laser freckle removal is to use the principle of thermal effect, mechanical effect, photochemical effect and electric magnetic effect when the light radiation ACTS on the skin to act on the affected tissues by means of burning, carbonization, gasification and coagulation, so as to deactivate the enzyme in the biological tissues.
