When you are not sleeping enough, your body secretes more cortisol. This hormone, too much, can cause stress in the body and be reflected directly in the skin. Some studies have also shown that chronic sleep deprivation is associated with premature aging of the skin, reduced effectiveness of the cell barrier, and decreased self-esteem. So for the appearance, but also for all the benefits it gives you, try to sleep all your sleep per night.
Oyetakin-White P, Koo B, Matsui M, Yarosh D, Fthenakis C, Cooper K., Baron E. In Effects of Sleep Quality on Skin Aging and Function, J. Invest. Dermatol. 2013: S126-S126
Oyetakin-White, A. Suggs, B. Koo, MS Matsui, D. Yarosh, KD Cooper, ED Baron. Does poor sleep quality affect skin aging? Clin. Exp. Dermatil., 40 (1) (2015), pp. 17-22