So i got a new girlfriend and she doesnt know that i wear a hair system
And she likes the buzz hair styles with dirty beard ..how short can i go with a hair system?

You just got a new girlfriend and she is already trying to change you?? Go with what works for you and what you like or otherwise................run Forrest, run!

Some months ago I talked with a seller&hairdresser about the posibility of this haircut and he told me it was possible but very risky, specially for the hairdresser.

PD: finally i didnt do it, i don't wear a hairsystem yet.