Our focus on grass-fed Collagen Peptides fits naturally here
However, the skin-brightening effect is often considered a "secondary" benefit that occurs when the body has an abundance of glutathione
doi: 10.1016/j.metabol.2005.01.014 129 BurchHBCooperDS
References Griffiths CEM, Armstrong AW, Gudjonsson JE, Barker J
Guangzhou Jiangman Biological Technology Co., Ltd
Kanamycin (200 g/ml), streptomycin (200 g/ml), or chloromycetin (68 g/ml) was used in liquid Starkey-S 0 when required, and kanamycin (80 g/ml), streptomycin (80 g/ml), or chloromycetin (27.2 g/ml) was used in the solid Starkey-Na 2 S 2 O 3 medium for selection