The WOWFIXIT web-page offers a product where you wipe a liquid over your phone screen and polish it.
They claim the result will make your protect your phone screen from scratches:
One of the many advantages of WOWFIXIT is that after applying WOWFIXIT to your device it will create an invisible layer that will protect your device from scratches and scuffs for up to one year. This layer reaches the full hardness of 9H on the Mohs scale of mineral hardness, which is a scale that characterizes scratch resistance, and is similar to Sapphire, Ruby or Corundum. Its almost as hard as a Diamond.
Using WOWFIXIT invisible liquid screen protector makes your screen up to 40% stronger in less than 5 minutes.
One retailer claims it is "consists of nanoparticles of titanium dioxide" but they stopped sounding convincing when they said "protective layer reduces the electromagnetic radiation by 92.7%"
Does this product protect screens against scratches?