Some of my favorite beautiful skin foods are spirulina, bee pollen, brewer's yeast, and flax oil.
Spirulina is a fresh water blue-green algae that is an excellent concentrated source of usable protein (60 - 70% protein), B vitamins including B12, beta carotene, essential fatty acids, and chlorophyll, all excellent for radiant skin. Spirulina helps stabilize blood sugar levels, which decreases the need for those emergency candy bars and french fries which so often lead to problem skin. It is also wonderful for nervous tension, herpes, psoriasis, stress, and circulation problems.
Bee pollen is actually flower pollen collected by the bees and then gathered by beekeepers. It is a potent concentration of nearly all known nutrients--all 22 amino acids, including high concentrations of the 8 essential ones, 27 different minerals and enzymes, the vitamin B complex, and vitamins A and E. Bee pollen helps feed your skin and over all energy from the inside out.
Brewer's yeast is an excellent source of protein, and contains all of the amino acids. It is one of the best known sources of the B complex (except B12) and many minerals which are required for healthy skin. Skin is predominantly protein, and a deficiency will show as slack, loose skin. Brewer's yeast helps prevent and smooth out wrinkles, especially as we age.
Flax oil is an excellent source of omega-3 and -6 fatty acids, as well as carotene and vitamin E, nutrients which feed healthy skin. Cellular membranes are mainly composed of essential fats, and the quality of fats eaten shows directly on the skin's surface. Flax oil keeps the skin soft and elastic. The Cherokee Indians made fresh flax oil and used it to treat people with skin diseases. Along with a good diet, flax oil helps prevent stretch marks in women after giving birth. It also reduces the pain, swelling, and inflammation of arthritis. And a major cause of skin cancer is consuming refined hydrogenated fats while being deficient in omega-3 fats. From The Facts about Fats by John Finnegan.