Don’t expect super durability as it depends upon the road on which you are driving and the way you park, mine was okay for 2 to 3 weeks.
The semi glossiness coat disappears within 24 hrs. but maintains the matt finish. The water repellent coat helps easy to clean the surface by a MF Brush. The matt finish long last at least for three weeks.
I normally never wash the car often as the usage is very less, go out locally once in a week now a day.
Honestly, it need not be the same for every one as it depends upon the brand and intensity of the black in the tyres, the kind of road used, frequency of usage, temperature, and the age of the rubber. For Dash, it depends upon driving whether - always windows closed or opened while driving and parking in the sun.
Overall it is a good product, value for money.