Our skin is often overlooked, perceived as merely a barrier. Yet, beneath this robust facade lies a world teeming with activity. Every region of skin, from the outermost epidermis to the underlying dermis, supports a 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