Hi Julie, use a quality product and proper cloths and it is not a problem, I have never scratched any cars I have used it on and use microfiber cloths. I have used it on a really dirty car but it clogs the cloth up but still no scratches, give the car a wash then use product, then clean it regularly with water less product, use it everywhere but the front windshield you won't go wrong.
Andy
Probably but 2016 is only a year behind 2015 in terms of ageing and fading.
Why not just revive your existing headlamps using T-Cut or one of the headlamp renovation kits available online? Would be cheper and much less grief in the long run and you won't need to come back next year and ask if 2017 headlamps will fit a 2015 car and so on. 😉 😄
Hi again Julie, I meant I have an Xj too, it is kept outside all year, I clean it with water less wash and wax, it comes up a treat and the more you use it the more protection you have, it takes around 20 minutes to do the whole car. I bought it through ideal world but it is available at most outlets.
all the best, Andy