Camera lens protectors act as a sacrificial barrier to save your phone's expensive camera module from scratches and impact cracks.Protector Materials & HardnessTempered Glass: The standard option. It offers excellent scratch resistance, matches the sleek feel of original glass, and shatters to absorb impact forces before your lens does.Sapphire Glass: A premium, ultra-tough material. It ranks higher on the Mohs hardness scale than tempered glass, making it nearly impossible to scratch with standard everyday keys or coins.Flexible Plastics (TPU/PET): Affordable, thin, and shatterproof options. However, they scratch much easier than glass and can degrade image clarity over time.