My Golden male, 18 months, is blowing his coat for the first time.

I bought a "Shedding Brush" (Long flat blade folded over), and when I use
it, boy does the hair come out. The little teeth are real short and I wonder
how it is working... Is it cutting? Will it harm his beautiful, albiet
shedding all over at the moment, coat?

As I use it, hair goes EVERYWHERE - unlike a regular brush that I just have
to pull out by the handful. Tricks will be appreciated.

Comments from those who use them on Goldens will be appreciated.