Blue leather shoes are rare. Factories generally only produce shoe polish in commonly used colors. Blue ones are not easy to sell, so they are difficult to buy.

Shoe polish is generally black, brown, colorless, and more red.

Shoe polish is a product used to polish and repair leather shoes or boots and enhance their waterproofing, which can extend the life of the footwear. Shoe polish usually comes in the form of wax or paste.

A preparation for wiping the surface of leather shoes to make them clean and shiny. There are liquid, semi-solid, and solid forms, and the main component is wax.