Theory:

（Semiconductor） Diode laser hair removal is a non-invasive modern hair removal technology, which can destroy hair follicle structure and permanently remove hair without scalding the skin

Skin Types ：According to Fitzpatrick classification, the skin color was divided into 6 types: white skin in Europe and America were I, II; Southeast Asian yellow skin type III, IV; African brown black skin type V, VI. Type I II skin has less melanin in the basal layer. It is safe to use 810 nm diode laser or 755 nm laser. The content of melanin in the basal layer of V-VI type brown and black skin is very high and 1064 nm laser is more suitable. Type III-IV yellow skin race, skin basal layer melanin content is medium, 810 nm Diode laser isthe safest.

Different wavelength characteristic：

755nm ： 755nmWavelength is the best absorption wavelength of melanin, also using the laser

selective photo thermal principle, can directly affect the melanocytes in the hair follicle, Thus effective destruction of the

hair follicles, with a strong ability to eliminate hair, especially small light hair still has outstanding performance, such as:

lip hair, face hair, hair hair after repeated depilation.

810nm :810nm Diode laser ，Has good uniformity, has better penetration, It is also a relatively good wavelength for melanocytes,

which is applied to the principle of selective photothermal effect. The melanin of hair follicle is the target color base, which

effectively destroys hair follicles and achieves a better hair removal

effect.

1064nm wavelength features: It has the advantages of deep penetration, long pulse width, large energy density range, etc.

It is suitable for hair removal of various skin types (especially type IV ~ VI skin) and color hair except white.