The Ordinary Natural Moisturizing Factors + HA for hair and scalp is a milky emulsion that aims to provide hydration to the scalp, helping to support scalp and hair health.The formulation contains a combination of ingredients that mimic the function of the natural moisturizing factors (NMF) and hyaluronic acid (HA) that are naturally produced within the skin. NMF and HA’s ability to bind and retain water allows for long lasting hydration of the scalp. This contributes to the overall maintenance in the scalp’s barrier function and aids in the support of healthy looking hair.