Skin regenerates at sunset
The stem cells that regenerate the skin are regulated by a daily cycle. In the morning, they do very little; their work begins at dusk. Disrupting this natural rhythm ages the skin and may increase the risk of certain cancers.
These are the findings of a study on mice and recently published in Nature, given its possible relevance to humans. Mice, humans and other species share a protein that regulates epidermal stem cell activity and rest phases. We are animals subject to the rotation of the Earth and the day-night cycle. Skin cells are more vulnerable to mutation when they are dividing, so they do not divide in broad daylight when the sun’s harmful UV rays could cause cancer.
source:http://www.drbaileyskincare.com/blog/
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