After applied SG, we r advice not to polish or wax our car. This will remove SG coat. The only way to maintain the car is to use clay bar. But u don have to do it every time after car wash. Maybe once a month depending on your available free time. As for using of alchohol, it is recommended to do it as often as possible. So, its up to individual to decide the frequency of claybar washing and alchohol usage. For me, I noticed that after clay bar, car paint is more shining and looks like showroom condition. Downside is, it attracts dirts very fast.....