The role of different wavelength filters in beauty devices

The natural world is filled with electromagnetic waves, and the unit that distinguishes electromagnetic waves is wavelength. The wavelength range of visible light to the human eye is 380nm-780nm, with short wavelengths including ultraviolet, X-ray, and gamma rays, and long wavelengths including infrared, microwave, and radio waves. When electromagnetic waves are extracted at specific wavelengths, lasers are formed. The application of lasers in medical beauty mainly depends on their energy and penetration power. Specific surface injuries can absorb lasers of specific wavelengths and destroy lesions through energy. Different depths of damage require lasers of different wavelengths to achieve. The shorter the laser wavelength, the stronger the penetration power, the darker the color of the lesion, and the longer the laser absorption wavelength.

What skin problems can laser solve?

Spot removal: freckles, age spots

Spot removal is the largest field of laser processing and plays an important role in most skin surface spots. Its principle is based on ruby as a medium, mainly targeting black and coffee colored pigments and spots. It combines light and pigments to decompose them. As the pigments are gradually absorbed by the body, the color of the spots will become lighter. At present, laser treatment methods mostly use color light systems with wavelengths ranging from 570nm to 950nm (color light is a treatment technique with a wavelength range that exceeds the visible light range of the human eye). It takes 4-6 times every 3-4 weeks to achieve significant improvement.

Treatment for congestion: telangiectasia, red face syndrome

Capillary dilation is more common in patients with fair skin. Using laser photothermal effect to block blood vessels and achieve therapeutic effects. At present, the 540nm-950nm color light system is mainly used for treatment, approximately once a month, for a total of 4-6 times.

Hair removal

Hair removal is also an important component of laser therapy, especially widely used around the limbs, armpits, and mouth. Its principle is to use the energy of laser to destroy hair follicles and cause hair loss. Once completed, the effect is significant. At present, the 650 nm-950 nm color light system has been widely used, approximately once a month for a total of three times.

treatment of acne

Laser treatment can only treat mild to moderate acne, but is not suitable for severe or infectious conditions. Laser treatment can be performed simultaneously with dermatology, and laser treatment for acne is different from previous laser treatments. The laser wavelength range is 420nm-950nm, and the treatment cycle is twice a week. After continuous treatment for one month, the therapeutic effect is significant.

Skin rejuvenation: Tightening and wrinkle removal of the skin

Laser intense pulsed light acts on skin tissue, producing photothermal and photochemical effects, which can rearrange, regenerate, and restore the elasticity of deep collagen fibers and elastic fibers, causing facial skin wrinkles to disappear or decrease, pores to reduce, and playing a role in regenerating the skin. At present, the treatment mostly uses 780nm-950nm color light system, about once every 3 weeks, and it is recommended to use 2-3 times.