Thank you for your contributionism...Iodine is a very important for the thyroid gland and therefore for the skin. Seaweed and other products from the sea are rich in iodine and many other minerals. Other very important thing is coenzim q10, good and long cooked bone broth is the best natural sorce that can really properly help to heal the gut and stomac plus it is an important factor for the healthy and young looking skin...