A moisturizer is a skincare product designed to hydrate and soften the skin. It helps to prevent dryness by sealing in moisture and can improve the skin's overall texture. Moisturizers come in various forms, including creams, lotions, and gels, and are often formulated with ingredients like glycerin, hyaluronic acid, and shea butter. Using a moisturizer regularly can benefit all skin types, including oily, dry, and combination skin. It is typically applied after cleansing and before makeup or sunscreen. Proper hydration can enhance the skin's barrier function, making it look healthier and more radiant.