bodyguardz - pure 2 glass screen protector, ultra-thin tempered glass screen protection for samsung galaxy s8 active bodyguardz bodyguardz pure 2 introduces alumitech. pure 2 for samsung galaxy s8 active is the first glass screen protector in the us to use a rare family of tempered glass called aluminosilicate. this innovative type of glass allows it to be thin, yet more protective than regular soda-lime glass found in other screen protectors.