It works for about 1-2 months for me. My glass was brand new and I also buffed it with the glass cleaner. Lots of work for what you get.
L
Lloyd B.
FlyBy30 review
Works but only lasts for 2 to 3 weeks. I have used this twice hoping the second time l applied it would last longer. When first applied you don’t need wipers but it will just not last very long.