Sources

Science backed sources on silk benefits: 

https://www.thehealthy.com/beauty/face-body-care/silk-pillowcase-benefits/

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7137929/

https://onlinelibrary.wiley.com/doi/10.1111/j.1365-2133.2004.05705.x

https://academic.oup.com/asj/article/36/8/931/2613967

https://pubmed.ncbi.nlm.nih.gov/36551280/