Well Dallas doesn't let me use clippers anywhere but on his legs thanks to a trainer who though it would be smart to punch him in the face and whip him in the legs while trying to clip him. And it took be years to be able to do his legs.
Soo I have no choice but to use scissors and hand razors for his face. Win by a nose shavers have always worked really well with Dallas. No bumps, really smooth, he doesn't get freaked out. I mean clippers would be easier, I use two-three shavers before most shows, but they get the job done. I got a perfect score at all my 4H shows in the clipping/braiding section when some of my friend's with horses that clip lost points. It all depends on you doing a thorough job.
And these work really
well, but they're expensive to buy for your horse: Gillette Sensor Excel Razor - Leap Year Promotion 40% Price Drop Gillette Shaving n' Razors Personal Care from Stockn'Go