Sleeping less than 5 hours per night accelerates skin aging, increases dehydration, and slows regeneration following exposure to external stressors, whereas an ideal duration is between 7 and 9 hours.

noli's read

This statement is supported by a solid scientific foundation. A landmark clinical study conducted by Case Western Reserve University and published in Clinical and Experimental Dermatology (2015) compared women sleeping less than 5 hours to those sleeping 7 to 9 hours. The researchers observed that chronic sleep deprivation correlates with more visible skin aging and increased skin dehydration, as measured by transepidermal water loss. Furthermore, following a test stressor applied to the skin, recovery of the protective barrier was 30% slower in those with limited sleep. Another clinical trial conducted in 2020 by Korean researchers confirms these results, demonstrating that restricting sleep to 4 hours per night for just six days directly impairs skin elasticity and hydration. The advice to aim for 7 to 9 hours of sleep to preserve skin quality is therefore fully validated by research.

the sources

1. 1Watson NF et al. (AASM & Sleep Research Society) 2015
2. 2Hirshkowitz M et al. (National Sleep Foundation) 2015