Skin hydration refers to the process of maintaining moisture levels in the skin, which is essential for its health and appearance. When the skin is well-hydrated, it appears plump, smooth, and elastic. Factors such as environmental conditions, age, and lifestyle can affect skin hydration. Using moisturizers and drinking adequate water can help improve skin moisture levels. Proper skin hydration also plays a crucial role in protecting the skin barrier, which defends against irritants and pathogens. Ingredients like hyaluronic acid and glycerin are commonly found in skincare products to attract and retain moisture. Maintaining hydration can prevent dryness, flakiness, and premature aging.