iTURBOS Full Screen Film
iTURBOS has the highest rated Galaxy S8 screen protector on Amazon, which is a full coverage PET Film. This isn't made from glass, which is why everyone recommends it.
A big problem with screen protectors for the Galaxy S8 or Galaxy S8+ is fit and finish around the curved edges of the screen. Almost every glass screen protector has negative reviews, as it's hard for companies to match the curve of Samsung's glass. Especially when they're not all the same from Samsung themselves.
Basically, glass screen protectors may or may not work, and you could lose touch sensitivity because there are gaps between the two pieces of glass. As a result, most on our list are NOT glass screen protectors, but films that should apply easier.
The iTURBOS film covers the entire front of the device, not just the screen. Going from edge to edge with cutouts for the sensors, camera, and speaker up top. It fits good, applies easily, stays on the phone, and comes in a 2-pack all for $7.99. This is why it's one of the highest rated options and one we recommend.