The key question that I always get asked is, does Laser work on Blonde Hair? Since blonde hair has less pigment, it most probably won't absorb the laser energy as effectively as darker hair would, leading to less effective results or no results at all. It does not work on hair types that lack melanin. If you are looking for more of a permanent hair removal for blonde hairs, electrolysis is the best method. Electrolysis treats and destroys the part of the follicle responsible for hair growth.
If you have peach fuzz, it is generally lighter in colour, therefore laser will not be able to target the fuzz successfully.
This will also apply to red and grey hairs.