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* Can't Sleep?
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* Beauty Sleep Study
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Professor Ronald Marks and his colleague, Peter Dykes analysed the skin during the sleep deprivation study, developing both clinical and objective instrumental results.

"Very little (if anything) is known about the changes that take place in the skin during sleep deprivation. This study was performed on average individuals who were deprived of sleep over a 48 hour period, in order to determine the effects of short term sleep deprivation on the skin."

Dermatologist Professor Ronald Marks, Emeritus Professor of Dermatology, University of Wales College of Medicine

Dermatologist Professor Ronald Marks, Emeritus Professor of Dermatology, University of Wales College of Medicine

The Dermatological Results

Is the skin saggy and lax or taut?

It’s a dermatological theory that lack of sleep impedes lymphatic activity, which is critical to the body’s ability to drain off toxins and reduce swelling,1 so, without enough sleep you wake up with a puffy face. However these results suggest that although prolonged sleep deprivation does result in a much saggier, puffy face, the first 24 hours of sleeplessness seems to tighten up the skin.

1. Min-Wei Christine Lee, MD, a clinical instructor at the University of California, San Francisco

Is the skin surface rough or smooth?

When we talk about how we look after a bad nights sleep, we often talk about looking ‘rough’. These results are interesting then, as the subjects’ skin appeared to get smoother. As you can see from the results of other tests, by the end of the study the skin became saggier and the moisture content increased as the skin became puffier. This then could explain the smooth appearance, as the puffiness ‘ironed’ out the wrinkles.

Are there dark circles around the eyes?

No-one will be surprised at the results of this test! There was a marked increase in the appearance of dark circles under the eyes. This is due to water being retained in the fatty pad below the eye. It is much more pronounced here because the skin is very thin and also sits on top of underlying purple muscle and blood vessels and therefore appears darker.2

2. Dr. Rhoda S. Nairns, clinical professor of dermatology at New York University School of Medicine. 2005:Feb; Scientific American

Corneometer (skin moisturisation)

There was a constant increase over the course of the study in water content in the superficial layers of the skin. This may be what produced the puffy and sallow looking faces and also the marked increase in dark circles, which had appeared by the end of the study.

View the Psychological Results