Does laser work in my situation?

Hi,

I use a new kind of laser wich call Apogee 5500 Acynosure
I like it . it works when i use on my arms because i have a black hair but i donot know if it works on my forehead or not ?!
I read many bad experiences in Internet :frowning:
their hair became harder and darker after useing laser on forehead .
what is your opinion about that ?
and what do you know about my laser ?

sorry for my bad English . I still a new learner :grin: