Well, they take a copper plate and they prepare it with chemicals, and these chemicals are activated by the light that reflects back from your face, and so the silver sticks to the places where the light is brightest. Understand?
Kuparilevy käsitellään kemikaaleilla, - jotka aktivoituvat valosta, - joka heijastuu kasvoistasi, jolloin hopea - tarttuu paikkoihin, joissa valo on kirkkain.