Our skin, a barrier, protects so much more than meets the eye. A complex and dynamic organ, it's a world of its own. Beneath the surface lies a network of layers, each working in harmony to keep us functioning. From https://sites.google.com/view/natural-skin-collagen-producti/%D8%A7%D9%84%D8%B5%D9%81%D8%AD%D8%A9-%D8%A7%D9%84%D8%B1%D8%A6%D9%8A%D8%B3%D9%8A%D8%A9