CITATIONS:

108: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5485961/&sa=D&ust=1592861471779000&usg=AFQjCNEUDluOt3lLoeLWYzGtFqQ85G1P3w

109: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5485961/&sa=D&ust=1592861471781000&usg=AFQjCNF5QuTYBvULlDMK9mpLxxJUse-PDQ

110: https://www.webmd.com/skin-problems-and-treatments/news/20191212/collagen-supplements-what-the-research-shows&sa=D&ust=1592861471777000&usg=AFQjCNEqT5dVznxyLCQqPrSB0ILl0jBOlg

111: https://pubmed.ncbi.nlm.nih.gov/30834689/&sa=D&ust=1592861471775000&usg=AFQjCNG0kmgwElBuAVXt5uQb1QZazGK-zg
113: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3583892/&sa=D&ust=1592861471773000&usg=AFQjCNGxu2-pJwMKPNx5w6on-34o8cCkew

114: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4885180/&sa=D&ust=1592861471768000&usg=AFQjCNE-gDtSSHbJZNZu9lpbN01nr1WT6g

115: https://books.google.com/books?id=eTxmjZFU6nAC&pg=PA746&lpg=PA746&dq=hyaluronic+acid+so+good+at+moisturizing+is+the+fact+that+it+can+hold+up+to+1,000+times+its+weight+in+water.&source=bl&ots=VjfqhFLAaA&sig=ACfU3U2yscqm5jLgsLQSC-AwxGw-UBNDlw&hl=en&sa=X&ved=2ahUKEwjUjaqX_ILqAhXOB50JHcmoAmMQ6AEwDnoECA0QAQ#v=onepage&q=hyaluronic%20acid%20so%20good%20at%20moisturizing%20is%20the%20fact%20that%20it%20can%20hold%20up%20to%201%2C000%20times%20its%20weight%20in%20water.&f=false

116: https://pubmed.ncbi.nlm.nih.gov/10890953/

117: https://pubmed.ncbi.nlm.nih.gov/10890953/&sa=D&ust=1592861471760000&usg=AFQjCNF4lpK2VABELJEIR0rEHiqTU_Cn2Q 118: https://www.google.com/url?q=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5579659/&sa=D&ust=1592861471768000&usg=AFQjCNGGqzmrAezskNo1NJ6NleXSHG4BHg