How Often Should You Shine Dress Shoes. First, you should opt for a wax. There are many factors that affect the outcome of the answer, for example: the weather, how often you wear your shoes, what you are doing in them, whether or not you use shoe trees and brush them down on a regularly basis etc.
You can dress them down by not polishing them to a high shine, but that, IME, works less well on black shoes than on brown. For dress shoes, unquestionably you want them shiny and new looking, so try to keep them nice and polish/shine them once a week if you wear them regularly, and maybe. Watch the complete shoe shining process: Long-term Shoe Care For Men's Dress Shoes.
You shouldn't wear them every day.
The quality of soldiers is often measured by how much time, effort and care they spend on the cleanliness of their shoes and boots.
All the more so in black. If it's every day, he should shine his shoes once per week (he also shouldn't wear the same shoes more than one day at a time to extend their life). As an extra manly bonus, take it upon yourself to not only regularly shine your shoes, but do so with a stand that you made with your own two hands.