According to the inquiry of Ziyi Mall, Yan Yusheng's light diet of collagen oligopeptide can be drunk after opening the lid, one bottle at a time, 1-3 times a day, depending on his age. The older you get, the more you get. Yan Yusheng's Haematococcus collagen oligopeptide drink has a light diet, which is helpful to improve the problems such as dry and rough skin, dull spots, fine lines and loose skin caused by collagen loss.