Foods that rejuvenate metabolism contain collagen. You will observe the difference when the foods that protect skin, hair and nail health are consumed regularly. So which foods make you beautiful? Here is the answer…   We have compiled for you the nutrients that tighten the skin, lengthen the hair and strengthen the nails. These foods contain a lot of collagen. Bone broth, propolis are a few of them… Here are the details…   Collagen deficiency, which is very important for skin, hair and nail health, is immediately noticed. Collagen helps hair grow strong and healthy. It nourishes the hair roots and stops shedding. It repairs…