My dad has something on the front. I don't know what % it is. But I had 50% on the sides of my old car and its pretty light. Hardly looked tinted at all. My dad's winshield lets through plenty of light. But when you look at something at a distance its distorted. But it doesn't look that way on the side windows. Maybe because its an older windshield and has some inperfections, the tint magnifies it. Very annoying to look through.