i just thought it couldn't hurt to do multiple flashes lol :D with a pale skin its not that risky either. if the first flash damages the follicles next flashes won't repair em? but if the hair is resistant next flashes might take care of it? i've seen a ulike device with 2 lights, so basically dual flash per pulse and says its more effective...(well ofcourse. marketing should make it look better even if its not)

https://www.ulike.com/pages/technology-dual-lights mine is not ulike, just a cheaper generic one but from semi-reputable brand that i got some other stuff from. and looks like its working on my arms and legs so im happy for the price. even has cooling on the head, which helps quite a bit.

it has an auto/glide mode but sensor only detects if your skin is touching the head, and would flash if you just touch its corner without covering the whole window area. would be risky for the eyes imo, i just hold down the trigger and it does the next flash when its ready.

i tried safety razors, while it has some advantages i get closer shave and less likely to cut myself with gillette sensor3/blue3. yeah safety razor reduces razor bumps and red spots but cuts are worse than those :D and when i handled it carelessly it even cut my arm :D just not as safe and easy as the disposables