Bullsone is a Korean manufacturer of car related product. They offer engine treatment product as well as surface treatment products. Their detailing products are only lately gathering more attention from the European customers.
Wiper marks are surface imperfections in the direction and line that windscreen wipers move. Simply put, these are marks in the glass caused by the movement of the windscreen wipers. They can affect your vision and are difficult te remove.
A rain repellent is a special product that is designed to be applied on glass. The product leaves a very hydrophobic layer on top of the glass. Water won’t be able to form any wetting, and the round beads are more easily blown off the glass.