Ever wonder why your skin looks dull despite your expensive serum routine? It...

https://www.tumblr.com/forsakendragonmaze/819285522057936896/does-collagen-production-increase-during-sleep

Ever wonder why your skin looks dull despite your expensive serum routine? It usually comes down to your sleep habits. When you don't get enough rest, your body spikes cortisol, which directly interferes with your skin's natural barrier function