Not real seeds, but dry fruits: this is what sunflower seeds are. Each flower has inside up to a thousand of them, arranged in concentric circles, with an increasingly lighter shade, as you move outward.
These sunflower seeds, contained in a hard outer shell, are rich in beneficial substances useful for our health: vitamins, oleic and linoleic acid, iron, magnesium, zinc, selenium and tryptophan. On the skin they have a smoothing and nourishing power.