Polishing is a finish-specific task, not a universal way to clean every shoe. Check whether the upper is smooth leather, suede or another material, then consult the maker’s care advice. These references help separate routine cleaning from the later decision to add polish.
Use polish only on the intended leather
Dr. Martens’ polish guide explicitly discusses smooth leather and distinguishes polish from other steps in its care routine. That is a useful starting point when a shoe cupboard contains several different finishes. Match any product to the material and colour specified by the manufacturer rather than assuming a familiar tin suits every pair. The guide is brand advice, not evidence that one product is the best option for all leather footwear.
drmartens.com · Dr. Martens · Smooth-leather polishing
Inspect before adding another product
Clarks’ broader shoe-cleaning guide separates different materials and recommends regular checks for small stains or scuffs. Use that inspection to identify the actual job before reaching for polish: loose dirt, an altered finish and structural wear are not the same problem. Follow the instructions for your shoes and ask the maker or a repairer if the surface is unclear. This overview does not recommend combining cleaning solutions from unrelated material sections.