I haven't actually opened this box and applied yet. Hope it hasn't changed because it worked awesome. I had a truck when I was in my 20s and the wiper motor died. No windshield wipers at all. Drove around like that for about 6 months thru spring and summer. With Rain X on my windshield I was able to get away with it for awhile. Rain just beads up and runs off, and hard rain actually ricocheted off and I could see fine. The key is to really clean your windshield before applying. Lasts a pretty long time too if I remember correctly. Obviously not a substitute for wipers, but in certain conditions you will be tempted to leave them off it works so good.