I second the Epistick recommendation for getting rid of light to moderate facial fuzz.
I have PCOS and my facial hair started getting thicker and more bristly every year. It was really starting to annoy me, because I'd epilate and tweeze out the sneaky ones, only for yet more hair to sprout the next day, and a couple of days later I'd catch sight of the senile bag lady in the mirror again. It was requiring too much time and effort, but I really noticed how people treated me differently if I went out in public with loads of long bristles sprouting all round my face.
I got so cross with it that I blew over £300 on the Braun IPL Silk Expert Pro 5 last June, and have been using it on my face at least once a week since then.
The blonde fuzz that covered my top lip has vanished, with only one or two lone hairs reappearing every month or so, which surprised me, because the information leaflet says "The device is not effective on very blonde, red, grey or white hair where the smaller amount of melanin would not absorb the light energy."
Some of the wiry black bristles under my chin still keep growing back, when I expected them to be among the first to be permanently zapped. Perhaps it has something to do with all the extra subcutaneous fat for the follicles to hide in under my chin, while the follicles on my upper lip are closer to the surface and more exposed?
I started off being very careful not to burn my face, keeping the lowest setting and moving the device before each new zap. Now I have it on the highest setting, and zap some areas three times in a row, which hurts (like being flicked with a rubber band) and leaves my skin hot and red like I've spent the day in the sun without sunscreen. I started doing that after the first 12 weeks, which were supposed to be long enough for permanent results, but far too many very coarse hairs were still surviving, and now most of them have gone.
I used to have stubble all over my chin, and now there are just one or two bristles that I haven't managed to destroy yet. Not sure if they are ones that have been dormant and have just woken up, or if some are just tougher and more deeply rooted than others and will take longer to defeat. I've forgotten the weekly treatments a couple of times recently, because my face has been smooth and hairless, so it's certainly having an effect, even if it is taking a lot longer than the 12 weeks mentioned in the information. Perhaps that's arm and leg hair? I dunno because I'm not very hairy except on my face.
I slap on some after sun serum once I'm done, and the redness fades in half an hour or so. I do it in the evenings though, don't think I'd want to do it in the morning and go straight out into the sunlight.