▶ Previous Artlcle: #14-3. Long-pulsed Nd:YAG Laser 

 

 

Moreover, since the hair is generally located deep, the spot size should be increased and the fluence should be reduced for test shots.

 

Epilation should be done, gradually increasing the fluence depending on the degree of epilation.

 

And the darker the hair, the fluence should be lower, and for cloudy brown, the fluence should be increased.

 

If the density of hair is thin, some laser beams can be overlapped.

 

 

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On the contrary, if the density is high, the pulse duration should be shortened, the spot size should be smaller, and the fluence should be started weakly, while gradually increasing the pulse duration and grasping the epilation condition.

 

If epilation is not done well afterwards, the fluence should be gradually increased.

 

At this time, if the density of the hair is high, the heat rise of skin tissue occurs a lot simultaneously, so the amount of DCD should be increased for both pre-cooling and post-cooling, and the laser shot should not be overlapped and is better to be irradiated slowly and sparsely.

 

Third, the area to be epilated should be considered.

 

Hair removal is possible in all areas from head to toe, and the hairs of each part are different in color, thickness, density, root depth, and skin color, so the parameters should be determined in consideration of the aforementioned.

 

 

 

-To be continued