9 Best Ingredients for Dry Skin That Actually Restore Moisture
Humectants, emollients, and occlusives: the layered ingredient strategy that genuinely transforms dry, thirsty skin.
9 Best Ingredients for Dry Skin That Actually Restore Moisture
Dry skin is not simply about using more moisturizer. It is about using the right combination of ingredients that work at different levels: drawing water into the skin, softening and smoothing the surface, and sealing everything in so moisture cannot escape.
Understanding the three types of moisturizing ingredients is the key to building a routine that genuinely transforms dry skin.
Humectants attract water from the environment and from deeper skin layers to the surface. Emollients fill in the gaps between skin cells, making skin feel softer and smoother. Occlusives form a seal on top of the skin to prevent water from evaporating.
The most effective dry skin routines combine all three. Here are the nine best ingredients across these categories, and why each one earns its place.
1. Hyaluronic Acid
Type: Humectant What it does: Attracts and holds up to 1,000 times its weight in water, delivering immediate hydration and a visible plumping effect.
Hyaluronic acid (HA) is naturally produced by the skin but levels decline with age, dryness, and environmental damage. Topical HA draws moisture from the air and from deeper skin layers to the surface, where it creates a reservoir of hydration.
For dry skin, HA is most effective when applied to damp skin immediately after cleansing, then sealed in with a moisturizer or occlusive. On its own, in a very dry environment, it can draw moisture out of the skin rather than into it, so never skip the moisturizer step.
Look for products with multiple molecular weights of HA: high molecular weight for surface hydration, low molecular weight for deeper penetration.
Best products: Neutrogena Hydro Boost Serum, The Ordinary Hyaluronic Acid 2% + B5, Vichy Minéral 89, SkinCeuticals H.A. Intensifier.
2. Ceramides
Type: Emollient and barrier repairer What it does: Rebuilds the skin barrier, reduces water loss, and protects against environmental irritants.
Ceramides are lipids (fats) that make up approximately 50% of the outermost layer of skin. Think of skin cells as bricks and ceramides as the mortar that holds them together. When ceramide levels are low, the barrier develops microscopic cracks that allow moisture to escape and irritants to enter.
Dry skin is almost always characterized by a weakened barrier and reduced ceramide levels. Topical ceramides directly replenish what is depleted, restoring the skin's ability to hold moisture and defend itself.
The most effective ceramide products combine ceramides with fatty acids and cholesterol, which together replicate the skin's natural barrier composition.
Best products: CeraVe Moisturizing Cream (contains ceramides 1, 3, and 6-II), Dr. Jart+ Ceramidin Cream, Elizabeth Arden Advanced Ceramide Capsules, La Roche-Posay Toleriane Double Repair Moisturizer.
3. Glycerin
Type: Humectant What it does: Draws water into the skin and helps other ingredients penetrate more effectively.
Glycerin (also listed as glycerol) is one of the most well-researched moisturizing ingredients in skincare, with decades of evidence confirming its effectiveness. It is a clear, odorless liquid derived from plant or synthetic sources that attracts water molecules and holds them on the skin's surface.
It is gentler and more stable than hyaluronic acid, works in all climates, and is found in almost every well-formulated moisturizer. It is also one of the most affordable effective ingredients in skincare, found in both drugstore and luxury formulations.
Best products: Vanicream Moisturizing Cream (high glycerin content), CeraVe Hydrating Cleanser, Neutrogena Hydro Boost Water Gel, Paula's Choice Resist Weightless Advanced Repairing Toner.
4. Shea Butter
Type: Emollient and mild occlusive What it does: Softens skin, fills in surface roughness, and provides lasting moisture without a heavy or greasy feel.
Shea butter is derived from the nuts of the shea tree and is rich in fatty acids (oleic, stearic, and linoleic acids) that closely mimic the skin's own natural lipids. This makes it particularly well-tolerated and effective at softening and smoothing dry, rough patches.
It also contains cinnamic acid esters that give it mild anti-inflammatory properties, making it suitable for dry skin that is also reactive or irritated.
Shea butter works best as part of a richer moisturizer or body butter rather than applied straight to the face, where it may feel too heavy for some skin types. For very dry facial skin, a small amount in a rich night cream is ideal.
Best products: First Aid Beauty Ultra Repair Cream, L'Occitane Shea Butter Body Lotion, Olay Regenerist Whip, Cetaphil Moisturizing Cream.
5. Squalane
Type: Emollient and lightweight occlusive What it does: Softens skin, locks in moisture, and mimics the skin's natural sebum without clogging pores.
Squalane (not to be confused with squalene, its natural precursor) is a lightweight, stable oil derived from olives, sugarcane, or sharks (plant-derived is far more common now). It is odorless, colorless, and has a molecular structure close enough to the skin's natural oils that it absorbs easily and does not leave a greasy residue.
For dry skin, squalane is one of the best facial oils available because it hydrates without causing breakouts and layers well under or over other products. It also has antioxidant properties that help protect the skin barrier from environmental damage.
Best products: Biossance 100% Squalane Oil, The Ordinary 100% Plant-Derived Squalane, Drunk Elephant Virgin Marula Luxury Face Oil (contains squalane), Tatcha The Essence.
6. Lactic Acid
Type: AHA exfoliant with humectant properties What it does: Gently removes dead skin buildup on dry skin while simultaneously hydrating.
Dry skin accumulates dead skin cells faster because the barrier is not functioning optimally. This leads to flakiness, dullness, and a rough texture that makes moisturizers less effective since they sit on top of the dead cell layer rather than penetrating the fresh skin beneath.
Lactic acid is the gentlest of the AHAs (alpha-hydroxy acids) and uniquely also acts as a humectant, meaning it draws water into the skin as it exfoliates. It is far more suitable for dry skin than stronger AHAs like glycolic acid, which can be too stripping.
Using lactic acid two nights a week removes the surface buildup and allows your moisturizer and serums to work significantly better.
How to use it: Apply after cleansing on exfoliant nights, before moisturizer. Always use SPF the following morning.
Best products: The Inkey List Lactic Acid Serum, Pixi Glow Tonic (5% glycolic/lactic blend, gentle), Paula's Choice Resist Daily Smoothing Treatment 5% AHA, Good Genes by Sunday Riley.
7. Niacinamide
Type: Barrier strengthener What it does: Increases ceramide production, reduces water loss, and calms inflammation that worsens dryness.
Niacinamide (vitamin B3) works from the inside of the skin rather than simply coating the surface. Research shows it stimulates the skin's own ceramide and fatty acid production, which directly strengthens the barrier and improves the skin's ability to retain moisture over time.
For dry skin, this means niacinamide addresses the underlying cause of dryness rather than just the symptoms. Regular use leads to skin that is progressively better at holding moisture on its own.
It is also anti-inflammatory, which is helpful because dry skin is often slightly inflamed due to barrier disruption.
Best products: The Ordinary Niacinamide 10% + Zinc 1%, Paula's Choice 10% Niacinamide Booster, Isntree Hyaluronic Acid Toner (also hydrating), Naturium Niacinamide Serum 12%.
8. Oat Extract (Colloidal Oatmeal)
Type: Emollient and soothing agent What it does: Soothes irritated, dry skin, reduces itching, and provides a protective film over the skin surface.
Colloidal oatmeal is oats that have been finely ground and suspended in liquid. It contains beta-glucan (a water-attracting polysaccharide), avenanthramides (anti-inflammatory compounds), and lipids that together calm reactive, itchy, or inflamed dry skin.
It is one of the few ingredients recognized by the FDA as a skin protectant and is widely used in eczema treatments. For dry skin that is also sensitive or reactive, oat-containing products are among the safest and most soothing options available.
Best products: Aveeno Daily Moisturizing Lotion (classic colloidal oatmeal formula), CeraVe Soothing Body Wash, Avene XeraCalm Lipid-Replenishing Cream, First Aid Beauty Ultra Repair Cream.
9. Petrolatum (Petroleum Jelly)
Type: Occlusive What it does: Forms the strongest moisture-sealing barrier of any topical ingredient, preventing virtually all water evaporation from the skin's surface.
Petrolatum (the active ingredient in plain Vaseline) is the most effective occlusive ingredient available. Studies show it reduces transepidermal water loss by up to 99%. It does not moisturize on its own but seals in whatever moisture is already in the skin, making it exponentially more effective when applied after humectants and emollients.
The "slugging" trend of applying a thin layer of petrolatum as the final step in an evening routine has clinical backing. For very dry or compromised skin, this technique can dramatically transform moisture levels overnight.
It is non-comedogenic (despite its texture, it does not clog pores) and one of the most skin-safe ingredients known to cosmetic science.
How to use it: Apply a thin layer as the absolute final step in your evening routine, after all other products have absorbed. Use Vaseline Original or any pure petrolatum product.
Best products: Vaseline Original Petroleum Jelly, Aquaphor Healing Ointment (petrolatum + lanolin), La Mer The Moisturizing Cream (contains petrolatum among other actives), Laneige Lip Sleeping Mask (for lips).
The Ideal Dry Skin Routine Using These Ingredients
Morning:
- Gentle, non-foaming cleanser
- Hyaluronic acid serum (on damp skin)
- Niacinamide serum (optional, layer on top)
- Rich moisturizer with ceramides and shea butter
- SPF 50
Evening:
- Cleanse (oil cleanser first if wearing SPF or makeup)
- Lactic acid (2 to 3 nights per week, on exfoliant nights)
- Hyaluronic acid serum
- Rich moisturizer
- Thin layer of squalane oil or petrolatum to seal (optional but very effective)
Ingredients to Avoid with Dry Skin
Denatured alcohol (SD alcohol, alcohol denat.): Strips natural oils and worsens barrier damage. Fragrance: Common irritant that inflames already-compromised dry skin. Sulfates (SLS, SLES): Harsh surfactants that strip moisture; common in foaming cleansers. High-concentration glycolic acid: More stripping than lactic acid; better suited for oilier skin types. Benzoyl peroxide: Effective for acne but too drying for skin that is already moisture-deficient.
The Bottom Line
Dry skin responds best to a layered approach: a humectant to draw water in, an emollient to soften and fill gaps, and an occlusive to seal it all in. Hyaluronic acid, ceramides, and petrolatum (or squalane) are the most evidence-backed trio for restoring moisture to very dry skin. Add niacinamide for long-term barrier building and lactic acid twice weekly to clear the surface for better absorption.
