system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does the brush bring shine to a shoe after polishing and conditioning?
gpt
When you glob on the polish with the applicator brush it fills in all the nooks and crannies. When you use the polishing brush it removes the excess and buffs the remaining polish into a shine. The hair on the polishing brush is so fine and tightly packed that it gives it that works similar to a buffing rag for autos. For a mirror shine on black leather add a little heat and rebrush or use a very soft cloth.