A long time ago it was impossible to treat all skin types with a laser hair removal machine. Why? Because a laser machine to be effective, needs pigmentation and the old types were not able to cope with blonde hair and Asian skins where the pigment in the dermis is very low. So it follows that to increase the effectiveness, practitioners used to increase the laser power during the treatment.
More power = more pain.
Patients with Asian skins or blonde hair were leaving the clinic before the end of the treatment or, if they were brave enough to cope with the pain, with redness all over the area treated!
Today is completely different! It’s actually possible to achieve a virtually pain-free treatment with all the skin types: Light skin, Asians and also darker types. However it’s always important to bear in mind that it’s unlikely for the laser to work well on white hair simply because they don’t have pigmentation.