Skin care refers to the range of practices and products that are used to maintain and improve the health and appearance of the skin. This can include cleansing, moisturizing, exfoliating, and protecting the skin from sun damage, pollution, and other environmental factors that can contribute to aging and other skin concerns. Some common skin care products include cleansers, toners, moisturizers, serums, and sunscreens. These products may contain a variety of ingredients such as vitamins, antioxidants, alpha and beta hydroxy acids, and hyaluronic acid, among others, which can help to nourish and protect the skin.