I have a little bit of an issue with this. If the customer isn't going to maintain the car and just run it through the car wash, what's the point. I've done a couple of 2 steps for my friends. I won't do it anymore. It's a waste of my time. Because they don't wash the car properly. Now if they really want me to do anything i just go over it with hd speed and call it a day.
Just like every other detailing related shops out there (and those consecutive replies PROVE it !!) they claim the coating will have 8-9 H Hardness (claiming its a pencil test and wont get scratched...) and won't get scratched from normal car washes (but they won't specify what kind of washes their coating will endure), also telling you the so called Glass-Coating will endure high temps, a match of fire on top of it and nothing will happen to it, scratch it with a pencil and it will endure, no swirls, forever hydrophobic and all those claims !, then asking you to just wash it with water pressure, don't use car shampoo coz it's hydrophobic and SUPPOSED NOT TO PICK UP DUST (BULLSH*T) and beed the water of it as soon as you wash it with water only !!, then what the hell is the point of the coating if it's gonna get scratched just like your paint ?? I personally got it applied just in 2015, while it looks really good on the car (and yes you can see the difference as the coating gives glass finish even when dust accumulates you will see that especially on the car bonnet) while that is true, I became extra careful, extra obsessed with how and what I was my care with, I was told to avoid ANYTHING but water, adding to that A sealant added on top to help with the water sheeting (so ya you don't want that sealant to fade away easily either when washed with pH balanced shampoo or even using waterless car washes or anything that would scrub the dust against the surface) my point is, coatings is a silly GIMMICK while it gives a great glass gloss on the paint, and add a second layer on top of the paint (or so it is??) it requires more care which doesn't justify the price !!, I personally like it on the car just for the look and thinking it adds a layer on top of the paint (but never again gonna pay premium price for it), also if you are asking for extra careful washing and maintenance of the coating then why the hell don't you
offer it for him free of charge since you are asking for a premium price for a cheap bottle of cquartz or whatever the cheap coating you are using that's mostly sold ONLINE (and you won't use the whole bottle am sure), instead of asking him to pay you a visit twice a month, pay you MORE to get the car washed your way, what a hack sorry to say but this is not the first time I see this kind of practice !..
as for the OP if you really like the Coating in
principal then buy it online and do it yourself and save your money and the trips to such detail shops !...