We seem to have had this discussion before, if you spray a "degreasing" agent such as "Muckoff" on your bike it will remove the grease or damage all the lubricated part it touches. Most cyclists would not regrease after using such an aggressive agent because of the difficulty,especially headsets and bottom brackets. Water and salt in the winter will then do the damage, failure of the moving part will follow. Chains require a deep clean more regularly at this time of year but are more easily lubricated afterwards. There is always lots of maintenance advice on Youtube. as for washing the bike, just use a mild detergent.
