10 Ingredients to Look For in Your Moisturizer

Not all moisturizers are created equal. The difference between a moisturizer that transforms your skin and one that sits on the surface doing nothing comes down to ingredients. Understanding what each ingredient does helps you choose products that actually address your skin concerns rather than just feeling nice on application.

Here are the top 10 ingredients dermatologists recommend, how they work, and which skin types benefit most from each.

1. Hyaluronic Acid

What it does: Holds up to 1,000 times its weight in water, making it the most powerful humectant in skincare. It draws moisture from the environment and deeper skin layers to hydrate the surface.

How it works: Hyaluronic acid (HA) is a glycosaminoglycan naturally present in your skin. Topical HA supplements your skin's declining natural reserves (which decrease with age) and provides immediate plumping hydration.

Best for: All skin types, especially dehydrated skin. Even oily skin benefits from HA because it provides water-based hydration without adding oil.

What to look for: Multi-molecular weight HA (combines high and low molecular weights for surface and deeper hydration). Concentrations between 0.5-2% are optimal. For a deep dive, see our hyaluronic acid guide.

Pro tip: Always apply HA to damp skin and seal with moisturizer. On dry skin in low humidity, HA can actually pull moisture from deeper skin layers.

2. Ceramides

What they do: Restore and strengthen the skin barrier. Ceramides are lipids (fats) that form the mortar between your skin cells, creating a waterproof seal that prevents moisture loss and blocks irritants.

How they work: Your skin barrier is like a brick wall -- skin cells are the bricks, ceramides are the mortar. When ceramides are depleted (from harsh products, aging, or environmental damage), the barrier weakens, leading to dryness, sensitivity, and irritation. Topical ceramides replenish what is lost.

Best for: Dry skin, sensitive skin, damaged barriers, eczema-prone skin. Essential for anyone using retinoids or acids (which can temporarily compromise the barrier).

What to look for: Ceramide NP, Ceramide AP, and Ceramide EOP are the most studied forms. Products with a ceramide-cholesterol-fatty acid ratio (3:1:1) mimic the skin's natural barrier composition most effectively.

3. Niacinamide (Vitamin B3)

What it does: Reduces pore appearance, controls oil, fades dark spots, strengthens the barrier, and calms inflammation. It is the most versatile active ingredient you can find in a moisturizer.

How it works: Niacinamide stimulates ceramide production (boosting barrier function from the inside), inhibits melanosome transfer (reducing hyperpigmentation), and regulates sebum production.

Best for: All skin types, but especially oily, acne-prone, and hyperpigmentation-prone skin.

What to look for: Concentrations of 2-5% in moisturizers are ideal. Higher concentrations (5-10%) are better in dedicated serums. Pairs excellently with ceramides and hyaluronic acid. For more details, see our niacinamide guide.

4. Glycerin

What it does: A powerful humectant that draws moisture to the skin. Glycerin is one of the most effective and well-studied moisturizing ingredients available, often outperforming more expensive alternatives.

How it works: Like HA, glycerin attracts water from the environment and deeper skin layers to hydrate the surface. It also helps maintain the skin barrier's flexibility and smoothness.

Best for: All skin types. Glycerin is non-comedogenic, non-irritating, and suitable for even the most sensitive skin.

What to look for: Glycerin should be in the top 5 ingredients for maximum benefit. It is inexpensive, so its presence high on the ingredient list is a sign of a well-formulated product, regardless of price point.

5. Squalane

What it does: A lightweight oil that mimics your skin's natural sebum (squalene). It provides emollient moisture without clogging pores and helps strengthen the skin barrier.

How it works: Squalane (the hydrogenated, stable form of squalene) integrates seamlessly with your skin's natural oils. It fills gaps between skin cells, softens rough texture, and prevents transepidermal water loss.

Best for: All skin types, including oily skin. Its lightweight texture makes it one of the few oils that oily skin tolerates well. Excellent for dry skin as a sealing layer.

What to look for: Plant-derived squalane (from olives or sugarcane) is the standard. It should feel silky and absorb quickly without a greasy residue.

6. Peptides

What they do: Support collagen production and skin repair. Peptides are short chains of amino acids that signal your skin to produce more collagen, elastin, and other structural proteins.

How they work: Different peptides serve different functions. Signal peptides tell fibroblasts to produce more collagen. Carrier peptides deliver trace minerals needed for wound healing. Neurotransmitter peptides may help relax expression lines.

Best for: Mature skin, anyone focused on anti-aging. Also beneficial for supporting skin repair after procedures or barrier damage.

What to look for: Palmitoyl tripeptide-1, palmitoyl tetrapeptide-7, copper peptides (GHK-Cu), and Matrixyl (palmitoyl pentapeptide-4) are the most evidence-backed forms.

7. Shea Butter

What it does: A rich emollient that provides intense moisture and barrier protection. Shea butter contains fatty acids, vitamins A and E, and anti-inflammatory compounds.

How it works: Shea butter melts at body temperature and creates a protective, occlusive layer on the skin that locks in moisture and shields against environmental irritants. Its fatty acid profile closely matches human sebum.

Best for: Dry to very dry skin, body care, hands and feet. May be too heavy for oily or acne-prone facial skin. Ideal for winter skincare when the barrier needs extra protection.

What to look for: Unrefined shea butter retains more beneficial compounds than refined versions. In moisturizers, it should be listed in the first half of the ingredient list for meaningful concentration.

8. Aloe Vera

What it does: Soothes, hydrates, and supports healing. Aloe vera contains polysaccharides, vitamins, and amino acids that calm irritated skin and provide lightweight moisture.

How it works: Aloe vera's polysaccharides form a moisture-retaining film on the skin. Its anti-inflammatory compounds reduce redness and irritation. It also supports wound healing by stimulating fibroblast activity.

Best for: Sensitive skin, sunburned skin, irritated or inflamed skin. A good base ingredient for lightweight moisturizers.

What to look for: Aloe barbadensis leaf juice or extract in the first few ingredients. Avoid products where aloe is listed near the end (minimal concentration).

9. Vitamin E (Tocopherol)

What it does: Provides antioxidant protection and supports the skin barrier. Vitamin E neutralizes free radicals from UV exposure and pollution, and enhances the effectiveness of other antioxidants (especially vitamin C).

How it works: As a fat-soluble antioxidant, vitamin E integrates into the cell membrane where it intercepts free radicals that would otherwise damage cellular lipids. It also stabilizes the skin barrier and has mild anti-inflammatory properties.

Best for: All skin types, especially sun-exposed or environmentally stressed skin. Excellent in combination with vitamin C and SPF for comprehensive photoprotection.

What to look for: Tocopherol (natural vitamin E) is more effective than tocopheryl acetate (synthetic form). Concentrations of 0.5-1% are typical in moisturizers.

10. Centella Asiatica (Cica)

What it does: Calms irritation, supports barrier repair, and promotes wound healing. Centella asiatica is an adaptogenic plant used in traditional medicine for centuries, now backed by modern research.

How it works: Its active compounds stimulate collagen synthesis, reduce inflammation, and accelerate wound healing. It strengthens the skin barrier and calms reactive skin.

Best for: Sensitive skin, rosacea-prone skin, post-procedure recovery, acne-prone skin (reduces inflammation and supports healing of acne lesions).

What to look for: Products listing Centella asiatica extract, madecassoside, or asiaticoside. TECA (titrated extract of Centella asiatica) is a standardized extract with consistent potency.

How to Read a Moisturizer Label

Ingredients are listed in descending order of concentration. The first 5-7 ingredients make up the majority of the formula. If a key ingredient is listed near the end, its concentration is likely too low to provide meaningful benefit.

Water (aqua) is almost always first -- this is normal and expected.

Active ingredients should appear in the first third of the list for efficacy.

Preservatives and fragrance appear near the end. Choose fragrance-free products when possible, especially for sensitive skin.

Ingredient Combinations That Work Best

• Ceramides + Cholesterol + Fatty Acids: Mimics the skin's natural barrier composition
• Hyaluronic Acid + Glycerin + Squalane: Layered hydration (humectant + humectant + emollient)
• Niacinamide + Ceramides: Niacinamide boosts the skin's own ceramide production while topical ceramides provide immediate support
• Peptides + Ceramides: Anti-aging + barrier repair
• Centella Asiatica + Ceramides: Calming + barrier strengthening

The Bottom Line

The best moisturizer for your skin contains a combination of humectants (to attract water), emollients (to soften and smooth), and occlusives (to seal moisture in). You do not need all 10 ingredients in a single product, but your routine should include representatives from each category.

Use GlowAI's AI skin analysis to identify your specific skin needs, then check your moisturizer's ingredient list against this guide to ensure it is actually addressing your concerns.