• oats

Oats contain silica to help build collagen and maintain it. Silica also stimulates anti-aging molecules, such as hyaluronic acid. It is preferred without sugar, of course.

• Eggs
  

Eggs are an important source of vitamin K, which is essential for stopping calcium build-up in elastin. When calcified, elastin is less flexible and drier, so wrinkles are more likely to form and they are deeper. Vitamin K is better absorbed with probiotics, so try for example a sauce with a spoonful of natural yoghurt on a salade niçoise.

• Flax seeds

Flax seeds are a good source of omega 3 fatty acids, which help the skin stay hydrated and fight inflammation. They are a good source of protein and fiber, too, which combine to stabilize blood glucose levels and can reduce puffiness.

• Sweet potatoes

Sweet potatoes are a good source of biotin, a family of B vitamins. Biotin helps regulate metabolic fatty acids to maintain a high level of hydration in skin cells. Sweet potatoes also contain vitamin C , which is used for the formation and maintenance of collagen.

• The onions

Onions are rich in sulphide, which is essential for the synthesis of collagen and to maintain the convex effect of a beautiful skin well hydrated . Onions also contain chromium, which helps to stabilize blood glucose levels, and thus reduce cravings for sugar.

Source : marieclaire.co.uk