Yes I believe so
If Barbicide/clippercide is anything like what I use (I work in a studio waxing) we use the tweezers and shyt on a client, immediately throw them shyts in a tub of marvicide after for at least ten or so and then take out wipe down and use. Imagine all the bacteria and shyt that would come to pass if they were using clippers on people right after another

. I'm just using tweezers on eyebrows usually and couldn't picture using them on a new person without disinfecting and
you apparently got barbers just cutting nikkas right after another 
. no wonder nikkas be getting keloids and shyt.