The skin can lack moisture for various reasons: if the skin barrier is not intact, the so-called transepidermal water loss (TWV) can increase. This means that a lot of the moisture that is supplied to the skin evaporates again. However, moisture can also be lacking in the skin due to a low production of hyaluronic acid. On hot days, the body loses large amounts of water through sweating, on other days you may not drink enough fluids. This makes the skin drier and tense or itchy over time. A moisturizing mask can therefore give the skin back moisture in a targeted manner. If it contains natural oils, these also help to strengthen the skin barrier.