SuperShieldz 3D Glass
Supershieldz offers both regular films and durable glass for the Galaxy S8.
The strengthened and hardened glass actually has decent reviews, all things considered. The company also promises a scratch-free, fingerprint-free, and bubble-free experience with their product. From the installation process to daily use with it installed.
Each protector has a color-matched black housing to make the glass protector invisible on your device, along with other colors. The installation uses a residue-free adhesive, so install one today without worry. Supershieldz offers a lifetime warranty and free replacements. If the install doesn't go right, get another one and try again. Which honestly could happen with glass on the Galaxy S8. If you aren't interested in the glass, they make excellent film screen protectors too.