Sufyan what compound did you use? And was it done by some ordinary guy or proffessional good workshop/detailer.
As far as i can guess, these spots might be caused due to use of poor compound or wax polish. The basic most thing when a car is exposed to compound is that its never a single process, atleast the car should be polished and waxed along with compound. Immediately. Compound immediately eats the top layer of your paint and that is why it gets clean as upper layer with impurities is taken off and cleaner layer underneath gets visible. Once this happens your paint surface is sort of naked and prone to further damage if its not sealed with a wax or polish atleast.
Extensive use of detergents, surf etc and shampoos also cause these things. Only shampoo the car if u have to wax later. Detergents like surf/ariel are poison for car paint so never use them no matter what.
Some compounds eat paint while some softly remove the layer of impurities. Desi compounds available are a big "no". A german compound comes by the name of "glasurit" mostly used by good workshops. Its a bit expensive but worth it. Use that and then inmediately use original formula1 wax polish. Formula1 is a horrible wax to be honest as it attracts dust and not good for regular polishing of your car but after a compound/afterpaintjob its one of the best to seal finish (saying only as per my experience). Once you are done with compound and formula1, wash the car (no shampoo) and then use some good wax like Sonax-extreme, Mafra or K2 (K2 is a slightly low budget hard wax). This is for a DIY job or else contact a professional detailer.
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