The best-kept beauty secret is closer to home than you think.For years, natural foods found in the kitchen have been used to aid in skin care.Pantries and refrigerators seem to be packed with healing agents, from egg white facemask to tighten pores to lemon juice for your hair; from cucumbers for your eyes to honey for your skin.Women probably know and have used about most of them – except, perhaps, the one that’s found in their dairy section at the local grocery store: milk (aka lac...