# References

1. Kawada C, Yoshida T, Yoshida H, et al. Ingestion of hyaluronans (molecular weights 800 k and 300 k) improves dry skin conditions: a randomized, double blind, controlled study. J Clin Biochem Nutr. 2015;56(1):66-73.  
doi: 10.3164/jcbn.14-81  
[Read more](https://pubmed.ncbi.nlm.nih.gov/25834304/)

2. Oe M, Sakai S, Yoshida H, et al. Oral hyaluronan relieves wrinkles: a double-blinded, placebo-controlled study over a 12-week period. Clin Cosmet Investig Dermatol. 2017;10:267-273.  
doi:10.2147/CCID.S141845  
[Read more](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5522662/)

3. Park K. Role of micronutrients in skin health and function. Biomol Ther (Seoul). 2015;23(3):207-17.  
doi: 10.4062/biomolther.2015.003  
[Read more](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4428712/)

4. Eberlein-König B, Placzek M, Przybilla B. Protective effect against sunburn of combined systemic ascorbic acid (vitamin C) and d-alpha-tocopherol (vitamin E). J Am Acad Dermatol. 1998;38(1):45-8.  
doi: 10.1016/s0190-9622(98)70537-7  
[Read more](https://pubmed.ncbi.nlm.nih.gov/25995818/)

5. Fuchs J,Kern H. Modulation of UV-light-induced skin inflammation by D-alpha- tocopherol and L-ascorbic acid: a clinical study using solar simulated radiation. Free Radic Biol Med. 1998;25(9):1006-12.  
doi: 10.1016/s0891-5849(98)00132-4  
[Read more](https://pubmed.ncbi.nlm.nih.gov/9870553/)

6. Majeed M, Bhat B, Anand S, Sivakumar A, Paliwal P, Geetha KG. Inhibition of UV-induced ROS and collagen damage by Phyllanthus emblica extract in normal human dermal fibroblasts. J Cosmet Sci. 2011;62(1):49-56.  
PMID: 21443845.  
[Read more](https://pubmed.ncbi.nlm.nih.gov/21443845/)

7. Chanvorachote P, Pongrakhananon V, Luanpitpong S, Chanvorachote B, Wannachaiyasit S, Nimmannit U. Type I pro-collagen promoting and anti-collagenase activities of Phyllanthus emblica extract in mouse fibroblasts. J Cosmet Sci. 2009;60(4):395-403.  
PMID: 19691935.  
[Read more](https://pubmed.ncbi.nlm.nih.gov/21443845/)

8. Fujii T, Wakaizumi M, Ikami T, Saito M. Amla (Emblica officinalis Gaertn.) extract promotes procollagen production and inhibits matrix metalloproteinase-1 in human skin fibroblasts. J Ethnopharmacol. 2008;119(1):53-7.  
doi: 10.1016/j.jep.2008.05.039  
[Read more](https://pubmed.ncbi.nlm.nih.gov/18588964/)
