A lot of people get this wrong. Retreating a jacket can make its caring and maintenance complicated and extra expensive. One should not retreat a jacket after every wash. The only necessary time retreat a jacket is when the durable waterproof repellency has expired. Whenever it rains, a good running jacket will allow its waterproof ability to fall droplets of rain droplets whenever it rains.
Else, retreating the jacket more often tends to temper the running jacket features like the breathability of the running jacket.