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Natural Moisturizing Factors + HA

Barrier Hydration · $

Natural Moisturizing Factors + HA

The Ordinary

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Supplies amino acids, sugars, urea, PCA, and hyaluronic acid that mimic the skin's own natural moisturizing factors, supporting the barrier and reducing water loss.

Best for
Dry skin
Price
$
Targets
Hydration
Key actives
Lactic Acid (AHA), Hyaluronic Acid, Glycerin, Allantoin, Vitamin E (Tocopherol)

Benefits

  • Replenishes the skin's natural moisturizing factors
  • Allantoin soothes and smooths
  • A simple, fragrance-free daily moisturizer

Key ingredients explained

Lactic Acid (AHA)

Exfoliant

As listed: Sodium Lactate

An alpha-hydroxy acid that exfoliates by loosening corneocyte adhesion while also acting as a natural moisturizing factor, making it gentler and more hydrating than glycolic acid. It smooths texture and brightens dry or sensitive skin.

In the guide

Hyaluronic Acid

Humectant

As listed: Sodium Hyaluronate

A glycosaminoglycan humectant that binds large amounts of water; high-molecular-weight forms sit on the surface as a hydrating film, low-molecular-weight forms penetrate the stratum corneum. Because it is a humectant, in dry air it can pull water from deeper skin — so apply to damp skin and seal it.

In the guide

Glycerin

Humectant

A small humectant that attracts and holds water in the stratum corneum, delivered into the epidermis partly via aquaporin-3. It raises hydration, improves plasticity and desquamation, and supports barrier recovery — one of the best-evidenced moisturizing agents.

In the guide

Allantoin

Soothing

A urea derivative that is keratolytic — helping shed excess keratin and smooth skin — while soothing irritation and promoting wound healing by stimulating cell proliferation and extracellular-matrix synthesis.

In the guide

Vitamin E (Tocopherol)

Antioxidant

As listed: Tocopherol

A fat-soluble antioxidant that neutralizes UV-generated free radicals and prevents lipid peroxidation and oxidative photoaging. It also moisturizes the stratum corneum and has anti-inflammatory activity — and works best alongside vitamin C.

In the guide

Full ingredient list

AquaCaprylic/Capric TriglycerideCetyl AlcoholPropanediolGlycerinSodium HyaluronateArginineSodium PCAPCASodium LactateUreaAllantoinLinoleic AcidTrioleinTocopherolPhenoxyethanol

Highlighted ingredients are explained above.

How to use

  1. 01Apply to face morning and evening as the last hydrating step.
  2. 02Layer over serums.

Warnings

  • For very dry skin, layer an occlusive on top in winter.

Expert summary

Rebuilds the skin's own NMF pool (amino acids, PCA, urea, lactate) plus hyaluronic acid and allantoin, a smart minimalist barrier moisturizer.

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