^
(1) ugh no. it's all hype created by the manufacturers. there is no real evidence that the tria or anything like it provides permanent destruction of follicles. and if one understands how Laser works to disable the follicle, one would never expect a home system to provide results. it's not physically possible.
(2) you are lucky. many get the kind of ingrowns that no amount of exfoliation will fix as they are deep in the skin and the only evidence is that one will get a painful spots.
lots of prodcts used proffesionally are converted into affordable home-use versions. so its not totally impossible. however one should chk reviews n make use of money back guarantees. i just don't hav patience for laser work. its not as quick as other methods.