Simple and easy to use. Used to spend hours waxing my cars with paste and other sealants etc. Now after a good wash, I give the car a 15 minute wipe down with this product every 2-3 months. It does last months as it indicates, and the water repellant is great. I can tell when it starts to wear out cuz the water doesn't bead as well, which usually takes about 8 washes. Had my new vehicle maintained with this product for a year now, and there are still no swirlmarks or any imperfections. Car's paint shines like it's new.