Yes beth electrolysis really works, but DONT buy one of those crappy "vector no needle deals" they are a complete waste of money. I have had good results from DIY electrolysis and the only scarring I have is from when I went to a "professional" and had my face fried with thermolysis. The swelling was awful. Needless to say I didn't go back. Stick with the blend it works.
As for laser I think it really depends on your hair type and the laser itself, wavelength, wattage etc. My hair is almost entirely blond so i decided to go with the time tested old fashioned electrolysis.
Audrey