I sprayed just on the bottom part of my windows where the window goes down into the door. Had to bang on my door handle to free it up but the window went down no problem. Prestone AS246 Ice and Frost Shield Vehicle Glass Treatment, 32 oz. https://www.amazon.com/dp/B01GJ3JTO4/ref=cm_sw_r_cp_api_i_-r3uCbTJ7SFSS