Why can laser beauty

Why can laser beauty? What is the principle of laser beauty? Laser actually uses different wavelengths to treat various skin problems, including color spots, acne, depilation, delicate skin, etc. What is the principle of laser treatment?

Why can laser be used for beauty

Nature is full of electromagnetic waves. The unit that distinguishes electromagnetic waves is wavelength. The wavelength of light that human eyes can see ranges from 380 nm to 780 nm. Shorter wavelengths include ultraviolet, roentgen and gamma rays, and longer wavelengths include infrared, microwave and radio waves. Extracting a specific wavelength of electromagnetic wave will form a laser. The application of laser in medical cosmetology mainly depends on its energy and penetration. Specific body surface lesions can absorb specific wavelength laser and destroy the lesions through its energy. Different lesion depths require different wavelengths of laser to reach. The shorter the wavelength of the laser, the stronger the penetration and the deeper the skin; The darker the color of the lesion, the longer the laser wavelength that can be absorbed.

Treatment of acne

Laser can only treat mild to moderate acne, and it is not suitable to choose laser treatment when there is severe or infection. Laser therapy can be combined with dermatology at the same time. The laser treatment of acne is different from the previous lasers. The laser wavelength range is 420 nm – 950 nm. The treatment cycle is twice a week. The effect is obvious only after continuous treatment for about one month.

Freckle removal: freckles, age spots

Spot removal is the largest field of laser treatment, which can play an effect on most spots on the skin surface. Its principle is to use the energy of laser to destroy the pigment and make it decompose and absorb. At present, most of the laser treatment methods used are color light systems with wavelengths ranging from 570 nm to 950 nm (color light is a treatment technology with a wavelength range that is not single, and the wavelength range spans the visible light range of human eyes). It takes 4-6 times to achieve significant improvement every 3-4 weeks.

Telangiectasia is more common in patients with fair skin. Laser uses its photothermal effect to seal blood vessels to achieve therapeutic effect. At present, 540nm-950nm color light system is mostly used for treatment, about once a month, a total of 4-6 times.


Hair removal is also an important part of laser treatment, especially in armpits, limbs and perioral areas. The principle is to use the energy of laser to destroy hair follicles and make hair fall off. Once, there is an obvious effect. At present, 650 nm-950 nm color light system is mostly used for treatment, about once a month, a total of 3-4 times.