Many people have been washing more diligently since the start of the COVID-19 pandemic. While good hand hygiene is important, it can quickly dry out the skin on your hands.
To keep your skin hydrated, turn down the water temperature when washing. Use cold water, as long as you work the soap into a lather. Also, moisturize your skin with a heavy hand cream right after washing. Apply the cream when your skin is still slightly damp.
To help your dry and cracked skin heal, also consider an extra nighttime treatment. Apply a thick moisturiser or Vaseline to your hands before bed. Then put a pair of cloth gloves, or even a pair of clean socks, on your hands. This allows the moisturizer to work as you sleep.