I always had my own explanation: when we age, we have less blood vessels reaching our dermis, and nutrition decreases. Also, production of growth factors decreases.  Mitochondria get “older” and are less efficient at producing energy. These statements are based on research. In fact, I am sure that almost everything has changed in my skin since I was a little girl. But this does not mean that changing those things back (assuming it would be possible!) would have a rejuvenating effect. And it is not enough to speculate, I would ask for proof and, if possible, a mechanism of action.  This is why I like the latest news from the … Continue reading Why is old skin so thin?