Vitamins are the literal building blocks of a healthy body, skin, hair and everything else. Your foremost source of vitamins is a healthy diet. This includes veggies, nuts, fruits and even water.
Conversely, if you were binging on unhealthy food, chances are that you are low on the requisite amount of vitamins and minerals that are essential to make up a complete diet. Since we are focusing on your skin here, eating well can definitely help you get healthy and younger skin.