polishes
"Polishes" is a versatile word with a few related but distinct meanings. It works as both a verb (something you do) and a noun (a product you use). Here are the most common and useful senses.
When you already have something good — like a speech, an essay, or a skill — but you keep working on the small details to make it even better, you are polishing it. It is like removing the rough edges from something.
education, professional life · Modern, widely used · figurative
She polishes her presentation every night before the big conference.
He polishes his English by reading articles and practising every day.