I received seal and protect free and applied it to the exterior paintwork myself which was a simple job.
However I didn't find it helped with washing the car which was disappointing, the dirt stuck to the paintwork as normal.
I have reverted to Glym super resin polish I used on my 3 series and find it is superior, in general I just need to use a pressure washer on my white X1 a quick sponge perhaps, then rinse again and that's it, a nice easy job the way I like it.
I would estimate the need to polish just once every 6 months and the polish goes on easily even if the car isn't completely dry, it's a very easy job.
Even the insects come of easily with the pressure washer.
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