I've been using Zaino products for about 20 years now. Their products are top notch and you can get an amazing shine out of them. An application can last months though I tend to use it far more often. You can get at least a couple dozen applications out of a bottle. The product layers so the shine can get deeper over time.
Application isn't as easy as the spray on/rinse off types, but it's not hard. They have a variety of products, but I typically use their Z7 soap, Z-AIO for surface prep & initial coat, and Z5 or Z2 polish to maintain it. It might take me 15 minutes to apply it and buff off is easy once it's dry. Heck, I use it on my wheels to help keep brake dust off too. If you want a quick application the Z6 gloss enhancer is spray on & wipe till dry for maintenance. The key thing is you don't need to use much at all for it to work.
There are some other products they have I'd highly recommend, even if you don't use anything else. The leather protectant is awesome and has a great leather smell to it. The tire gloss is wipe on, has good UV protection, and won't sling off onto your paint if you need to drive right away after using it.
Zaino Website & Photos