https://pubmed.ncbi.nlm.nih.gov/18416885/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5793325/
https://pubmed.ncbi.nlm.nih.gov/24401291/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9198822/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4201279/
https://onlinelibrary.wiley.com/doi/10.1111/jocd.12393
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1606623/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10180699/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8824545/
https://www.sciencedirect.com/science/article/pii/S1756464624001269#:~:text=Collagen%20peptides%20maintain%20hair%20follicle,hair%20growth%20and%20healthy%20hair.
https://www.nutrafoods.eu/index.php/nutra/article/view/47/41
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8620403/#B85-polymers-13-03868
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4594048/
https://pubmed.ncbi.nlm.nih.gov/33562729/
https://pubmed.ncbi.nlm.nih.gov/28174772/
https://www.nutrafoods.eu/index.php/nutra/article/view/9
https://onlinelibrary.wiley.com/doi/10.1111/jocd.12393
https://www.researchgate.net/publication/283728627_Dietary_Supplementation_with_Specific_Collagen_Peptides_Has_a_Body_Mass_Index-Dependent_Beneficial_Effect_on_Cellulite_Morphology
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5429168/
https://pubmed.ncbi.nlm.nih.gov/25314004/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5793325/#:~:text=Collagen%20is%20by%20far%20the,result%20in%20an%20increased%20BMD.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2656961/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1606623/
https://www.oaepublish.com/articles/2347-9264.2020.153