{"id":11702,"date":"2025-12-12T14:27:30","date_gmt":"2025-12-12T14:27:30","guid":{"rendered":"https:\/\/www.isdin.com\/us\/blog\/?p=11702"},"modified":"2025-12-12T14:27:32","modified_gmt":"2025-12-12T14:27:32","slug":"what-are-natural-moisturizing-factors-nmfs","status":"publish","type":"post","link":"https:\/\/www.isdin.com\/us\/blog\/skincare\/what-are-natural-moisturizing-factors-nmfs\/","title":{"rendered":"NMFs Explained: What They Do for Your Skin and How to Support Them"},"content":{"rendered":"Reading:<\/span> 5<\/span> minutes<\/span><\/span>\n

<\/p>\n\n\n\n

When we talk about skin, the conversation can feel infinite. Layers, types, lipids, pH, microbiome… a whole world spread across roughly two square meters. It wraps around us, shields us, and constantly works in our favor. But there\u2019s one concept that can help everything we know about skincare fall into place: Natural Moisturizing Factors<\/strong>, or NMFs.<\/p>\n\n\n\n

Ever heard of them? Here\u2019s the simple version: your skin is smart.<\/strong> It has a built-in hydration system that knows how to hold onto water without asking for much in return. Keep reading, because today\u2014guided by Chiyoung Kang Park, ISDIN Medical Marketing Specialist\u2014we\u2019re breaking down everything you need to know about NMFs, and why they matter more than you might think.<\/p>\n\n\n\n

What exactly are Natural Moisturizing Factors?<\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n

<\/p>\n\n\n\n

Park puts it best: \u201cNMFs are the molecules your skin naturally produces to stay hydrated.\u201d Think of them as your skin\u2019s internal water system. They help keep moisture in, so skin stays soft, flexible, and free from that tight, uncomfortable feeling that often signals dehydration.<\/p>\n\n\n\n

What makes NMFs so fascinating? \u201cThey behave like magnets,\u201d Park says. \u201cThey attract water and hold onto it, creating a reservoir of hydration that even the best cream can\u2019t fully replicate if NMF levels are off.\u201d When NMF levels are high,<\/strong> skin looks luminous and feels balanced. When they drop<\/strong>, moisture escapes faster\u2014and your skin lets you know.<\/p>\n\n\n\n

\n

\u201cNMFs behave like magnets. They attract water and hold onto it.” Chiyoung Kang Park, ISDIN Medical Marketing Specialist<\/p>\n<\/blockquote>\n\n\n\n

What are NMFs made of?<\/h3>\n\n\n\n

NMF isn\u2019t just one ingredient. It\u2019s a complex, beautifully orchestrated mix of amino acids, urea<\/a>, lactic acid, PCA (pyrrolidone carboxylic acid), glycerin, and essential minerals<\/strong>, all working together to attract and retain moisture. “\u201cEach one plays a unique role,\u201d Park explains. \u201cSome pull in hydration, others help keep keratin soft, and some strengthen the skin barrier so moisture stays where it belongs.\u201d<\/p>\n\n\n\n

Why does this matter?<\/strong> Because when these components decrease\u2014due to cold, heat, stress, or aging\u2014water can escape more easily, and skin starts to lose its sense of comfort. That\u2019s where skincare comes in. It can\u2019t replace NMF, but it can support them<\/strong>, helping restore balance and hydration.<\/p>\n\n\n\n

The 5 types of NMFs<\/h2>\n\n\n\n

1. Amino acids<\/h3>\n\n\n\n

If NMFs were a building, amino acids would be the foundation. They make up the largest portion of our skin\u2019s natural hydration reserve, and their job is simple: they hold onto water. Each one acts like a little hook, drawing moisture in and helping maintain softness, elasticity, and a smooth texture.<\/p>\n\n\n\n

\"amino<\/figure>
\n

<\/p>\n\n\n\n

But these levels can decline\u2014due to over-exfoliation, harsh cleansers, or simply aging. And when they do, the skin speaks up: tightness, rough patches, makeup that won\u2019t sit right. That subtle something\u2019s off<\/em> feeling.<\/p>\n<\/div><\/div>\n\n\n\n

<\/p>\n\n\n\n

How to support amino acids<\/h4>\n\n\n\n

Look for hydrating serums<\/a> or lightweight moisturizers<\/a> that include amino acids or ingredients that can pass off as doppleg\u00e4ngers. \u201cA well-formulated serum with hyaluronic acid is often enough to bring hydration and comfort back,\u201d says Park.<\/p>\n\n\n\n

<\/p>\n\n\n\n

2. Urea<\/h3>\n\n\n\n

Urea plays a dual role in your skin\u2019s hydration story. It doesn\u2019t just attract water\u2014it softens the skin and gently loosens dead skin cells, keeping your texture even and flake-free.<\/p>\n\n\n\n

\n

<\/p>\n\n\n\n

Urea levels may drop with age, in dry climates, or with frequent exfoliation. And when they do, skin can feel rougher and less able to hold moisture on its own.<\/p>\n<\/div>

\"urea<\/figure><\/div>\n\n\n\n

<\/p>\n\n\n\n

What to try<\/h4>\n\n\n\n

“Our skin already produces urea, so the best way to enhance it is to support it with more of the same,” Park explains. Choose moisturizers with low to medium concentrations of urea, especially if you experience persistent dryness.<\/p>\n\n\n\n

<\/p>\n\n\n\n

3. Lactic acid<\/h3>\n\n\n\n

Much like urea, lactic acid is both a hydrator and a gentle exfoliant. Within the Natural Moisturizing Factors, it retains water while helping lift away dead skin, resulting in smoother texture, more radiance, and moisture that feels well-balanced\u2014not fleeting.<\/p>\n\n\n\n

\"lactic<\/figure>
\n

<\/p>\n\n\n\n

But what if your lactic acid levels drop?<\/strong> It\u2019s totally natural. Age, the wrong skincare routine, or harsh weather can all reduce lactic acid in the skin, leading to dullness and reduced product absorption.<\/p>\n<\/div><\/div>\n\n\n\n

<\/p>\n\n\n\n

Here\u2019s how to support lactic acid in the skin<\/h4>\n\n\n\n

Look for products with low concentrations of lactic acid. As Park puts it: “A thoughtfully-formulated AHA serum can restore brightness and comfort, especially in skin that feels dull or uneven.”<\/p>\n\n\n\n

<\/p>\n\n\n\n

4. PCA & derivatives<\/h3>\n\n\n\n

One of Park\u2019s favorites, PCA (pyrrolidone carboxylic acid) is a long-lasting humectant. It draws in water and helps stabilize moisture levels over time, keeping skin balanced and resilient. “It\u2019s not just about hydration\u2014it\u2019s about stability,” she tells us.<\/p>\n\n\n\n

\n

<\/p>\n\n\n\n

Dry climates and weakened skin barriers can cause PCA levels to fall, which often leads to faster water loss and a less plump, cushioned feel.<\/strong><\/p>\n<\/div>

\"pca<\/figure><\/div>\n\n\n\n

<\/p>\n\n\n\n

What to do when levels drop<\/h4>\n\n\n\n

The best approach? Choose a moisturizer<\/a> that fits your skin\u2014and that you enjoy using<\/strong>. “It\u2019s the one you reach for without thinking, morning and night,\u201d says Park. \u201cBecause your skin feels better with it.”<\/p>\n\n\n\n

<\/p>\n\n\n\n

5. Glycerin<\/h3>\n\n\n\n

“Glycerin is funny,” Park smiles. “It\u2019s never been trendy, but it\u2019s always been essential.” A true workhorse, glycerin draws in moisture and holds it in\u2014even when conditions are tough, like cold weather paired with dry indoor heating.<\/p>\n\n\n\n

\"glycerin<\/figure>
\n

<\/p>\n\n\n\n

When the skin barrier is weakened, glycerin can be stripped away more easily, leading to tightness that no cream seems to fully soothe.<\/strong><\/p>\n<\/div><\/div>\n\n\n\n

<\/p>\n\n\n\n

What to reach for to support glycerin<\/h4>\n\n\n\n

Before adding more hydration, start with your cleanser. “Many cleansers can be too harsh and wash away more than they should. Meaning when it comes to hydration, your skin is already in the red before you can put on moisturizer,” Park explains.<\/p>\n\n\n\n

That\u2019s why an oil cleanser<\/a> that respects the skin barrier is so important. \u201cIt keeps hydration in, so the rest of your routine can do its job,\u201d she shares.<\/p>\n\n\n\n

<\/p>\n\n\n\n

6. Minerals and other natural moisturizers<\/h3>\n\n\n\n

Last but not least: minerals like sodium, potassium, and magnesium. These quiet players regulate water distribution within the skin, helping prevent dry patches or areas that feel too oily or too dry.<\/p>\n\n\n\n

\n

<\/p>\n\n\n\n

Their levels drop for the same reasons as the rest of the NMF family\u2014weather, dehydration, or over-washing. When they\u2019re depleted, skin feels unsettled, often without a clear reason.<\/strong><\/p>\n<\/div>

\"Minerals<\/figure><\/div>\n\n\n\n

<\/p>\n\n\n\n

Here\u2019s how to protect them<\/h4>\n\n\n\n

Gentle routines make the biggest difference. Long hot showers and over-cleansing can strip these minerals away. \u201cStick to gentle products and daily consistency,\u201d says Park. \u201cSkin responds to rhythm more than intensity.\u201d<\/strong><\/p>\n\n\n\n

Discover your skin type<\/a>, learn your phototype<\/a>, and build a routine<\/a> that truly fits you.<\/p>\n\n\n\n

<\/p>\n\n\n\n

A little support goes a long way<\/h2>\n\n\n\n
\"skincare<\/figure>\n\n\n\n

<\/p>\n\n\n\n

A gentle cleanser. A serum that fits. A moisturizer you enjoy. It\u2019s not about the perfect routine\u2014it\u2019s about a relationship with your skin. And as Park reminds us: \u201cEverything works better when we stop chasing miracles and focus on balance.\u201d<\/strong><\/p>\n\n\n\n

\n

\u201cEverything works better when we stop chasing miracles and focus on balance.\u201d<\/strong> Chiyoung Kang Park, ISDIN Medical Marketing Specialist<\/p>\n<\/blockquote>\n\n\n\n

That\u2019s the heart of good skincare. It doesn\u2019t demand perfection\u2014just presence. Support your skin so it can do what it already knows how to do.<\/p>\n\n\n\n

And one final fact: your skin renews itself roughly every 28 days. Enough time to see real results (only if you stay consistent). So start today, stick with it, and let your skin show you what\u2019s possible.<\/strong><\/p>\n\n\n\n

\n","protected":false},"excerpt":{"rendered":"

Your skin has a built-in hydration system that knows how to hold onto water without asking for much in return. Find out more.<\/p>\n","protected":false},"author":63,"featured_media":11708,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"image","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[2461,2458],"tags":[],"class_list":["post-11702","post","type-post","status-publish","format-image","has-post-thumbnail","hentry","category-skincare","category-your-skin","post_format-post-format-image"],"yoast_head":"\nNMFs Explained: What They Do for Your Skin and How to Support Them<\/title>\n<meta name=\"description\" content=\"Your skin has a built-in hydration system that knows how to hold onto water without asking for much in return. 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