What are the causes and prevention of whiteheads?

It is known that recurring whiteheads on the forehead and chin are closely related to various factors such as excessive sebum secretion, clogged pores, cosmetic residue, and irregular lifestyle habits.

I'm curious as to how these factors affect the skin and cause whiteheads.

I'm also curious to know what lifestyle modifications I can make to prevent or improve this.

It would be helpful if you could give specific examples, such as managing eating habits, washing habits, sleeping patterns, and stress management.