Subsequent treatments won’t hurt as much if the remaining hair is finer, so maybe a higher fluence can be used.
For some reason the laser treatments on my chest did not hurt as much as the back and the base of the neck. Now that hurts! My chest hair was very coarse too, much more so than my back. My practitioner told me I must have a higher pain threshhold than average. She said that most guy cannot tolerate 45 Joules because of the pain.
When I switched over to the Lighsheer from the Apogee I could feel the pulses reaching deeper into the hair follicle. But I had less post treatment pain and redness thatn with then Apogee at 40 Joules. Both lasers did a good job but I feel that the Lighstheer is better, especially on the finer hairs.
One important thing with the Lightsheer is that the technician use compression. That’s where they press down firmly with the laser handpiece. That causes the hair follicle to rotate closer to the surface of the skin and temporarily forces blood out of the nearby blood vessels so the heoglobin doesn’t absorb the laser energy. This makes a big difference! If they are not using compression, they are probably not very experienced with the Lighsheer or they have not received sufficient training from the mfr. Compression also results in less pain as the cooling system is also more effective when compression is used.
Hope this helps.