
Barrier Hydration · $
Natural Moisturizing Factors + HA
The Ordinary
See reviewsSupplies 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)
ExfoliantAs 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 guideHyaluronic Acid
HumectantAs 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 guideGlycerin
HumectantA 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 guideAllantoin
SoothingA 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 guideVitamin E (Tocopherol)
AntioxidantAs 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 guideFull ingredient list
Highlighted ingredients are explained above.
How to use
- 01Apply to face morning and evening as the last hydrating step.
- 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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