The Ordinary Natural Moisturizing Factors + HA is a popular and effective moisturizer designed to hydrate and protect the skin. It's often referred to as a "serum" in casual conversation due to its lightweight texture and use of potent, active ingredients, but it is technically a cream or lotion. The "Original" in the user query refers to this specific, foundational formulation.

Key Features and Benefits

Skin-Identical Ingredients: The formula is a non-greasy cream that contains a direct topical supplement of Natural Moisturizing Factors (NMF). These are a collection of ingredients that are naturally found in the skin and work to keep its outer layer protected and well-hydrated. They include amino acids, fatty acids, ceramides, glycerin, hyaluronic acid (HA), and urea.

Immediate and Long-Lasting Hydration: The blend of these components provides both instant hydration and lasting moisture with continued use, strengthening the skin's barrier function.

Lightweight and Non-Greasy: Despite being a cream, it has a light texture that absorbs quickly into the skin, making it suitable for all skin types, including oily and sensitive skin. It also works well as a primer before applying makeup.

Improves Skin Barrier: By supplementing the skin's NMFs, this moisturizer helps to repair a compromised skin barrier, leading to a healthier, more resilient complexion.