Our skin is often overlooked, treated as merely a barrier. Yet, beneath this complex facade lies a universe teeming with life. Every layer of skin, from the outermost epidermis to the interior dermis, supports a unique https://sites.google.com/view/collagenselec2/%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