2021-01-29
The concern of the girls who use the hair removal device is definitely whether the hair removal device does harm to our skin? After all, things like instruments are used directly on the skin. It is safe to say that hair removal is not harmful to the skin.
The working principle of hair removal is based on the necessary conditions for melanin to absorb heat. Photon hair removal uses this principle to emit light with a wavelength suitable for the absorption of melanin in the hair follicle. After melanin selectively absorbs light energy, the local temperature rises sharply. , The hair follicle tissue will be destroyed.
This thermal damage can be limited to the target tissue, that is, the hair follicle containing melanin, so it will not cause damage to the surrounding tissue. After the hair follicle is destroyed, it can achieve the effect of no longer growing for a long time. This time can last from six months to two years (the growth cycle of different people's hair is different). But note that hair removal is only "long-term hair removal", not "permanent hair removal". There is no permanent method of hair removal in the world.
So how to choose hair removal equipment? We only need to remember 2 points: 1. Energy density: The energy density must exceed 5J/cm, otherwise the effect of this hair removal device will not be ideal. 2. Wavelength: The wavelength of the home hair removal device should be higher than 500nm, otherwise it will cause damage to the skin, and the wavelength above 600nm can penetrate deeper into the lower hair follicles to achieve a more thorough hair removal effect.
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