Originally bought a sample bottle from a United gas station promo - was impressed by the demo on my car... Loved it so much, ordered the 1 gallon version and now I have a small bottle in my car boot for quick washes on the go... Does a great job of keeping up the shine and cleanliness after a car wash, especially bird droppings and dust... And it smells fantastic to boot... And finally, very affordable - good price! Very highly recommended!