A built-in moisturizer
Inside the outer layer of your skin sits a group of small, water-loving molecules known as the natural moisturizing factor, or NMF. They draw water in and hold it there, which keeps the surface soft and flexible.
When NMF levels are healthy, skin feels comfortable even in dry air. When they drop, skin can feel tight, look dull and flake more easily.
What it is made of
Roughly 40% of NMF is free amino acids. The rest is a blend of PCA, lactate, urea, sugars and minerals such as sodium, potassium and magnesium. Each one binds water in a slightly different way, which is why a balanced mix works better than a single hero ingredient.
Why it runs low
Hot water, harsh cleansers, sun exposure and age all reduce NMF. Replenishing the same components it is made of, in the right proportions, is the idea behind every Nourish formula and the NMF count on each label.
