I'm not sure about the rest. It works when I drink it. My biggest feeling after drinking it is that my skin becomes white, tender and moist, and it will not be seriously oily and my skin will not turn yellow. In addition, their collagen peptides are all natural raw materials and have not been added. It is recommended to take oral collagen products, which can deeply smear the dermis that cosmetics can't reach, make the skin more elastic from the inside out and make the skin full of moisture.