Nano hydroxyapatite or GC tooth mouse for remineralising chalky teeth?

Hi, as the title says, I need to remineralise chalky teeth (caused by brushing too hard and brushing right after I ate food). After some research, I'm considering applying 10% Nano hydroxyapatite toothpaste or GC tooth mousse as a leave-on after brushing. Would they help reduce the appearance of the white patches, even moderately? Which one would be best? Or should I use both together? I know fluoride is the strongest but I read it doesn't do anything to help fix the appearance of chalky teeth. I use a fluoride toothpaste when brushing but I rinse it all out, because it stings and I just don't like leaving fluoride in my mouth.

I don't drink or smoke or have any medical conditions.

Any advice on fixing chalky/demineralised teeth is appreciated. Thanks