Hyaluronic acid – effects, types & application in skin care

What is hyaluronic acid?

Hyaluronic acid (HA) is a natural component of the skin's extracellular matrix. As a moisture-binding glycosaminoglycan, it can bind large amounts of water, thus smoothing the skin's surface, visually reducing dryness wrinkles, and promoting a supple, plump skin feel. In modern skincare, hyaluronic acid is considered a basic active ingredient for all skin types—from sensitive to oily.

Why is hyaluronic acid so effective?

With increasing age and due to environmental stress, the body's natural hyaluronic acid production decreases. The result: less elasticity, increased dryness, and a duller complexion. Topically applied hyaluronic acid acts as a moisture magnet on the surface, indirectly supporting the skin barrier and thus reducing transepidermal water loss. Combined with barrier-strengthening lipids, a synergistic effect occurs: moisture is not only attracted but also "sealed in" for longer.

Types of hyaluronic acid

• High molecular weight HA (HMW): forms a light, moisture-binding film on the surface; ideal for fast smoothing and instant effect.
• Low molecular weight HA (LMW): smaller fragments penetrate deeper into the stratum corneum and noticeably improve hydration – useful for sustained moisture penetration.
• Hyaluronic acid crosspolymer / cross-linked HA: ensures a long-lasting moisture depot and a particularly “plump” skin feeling.
• Sodium hyaluronate: the most common, stable salt form with excellent water binding properties – often found in serums and fluids.

Who is hyaluronic acid suitable for?

For all skin types . Dry and dehydrated skin benefits from increased comfort, while combination and oily skin benefits from a light, non-greasy texture. Even sensitive skin appreciates the mild, non-irritating action – a fragrance-free, well-tolerated formula is crucial.

Application & Layering

Hyaluronic acid is ideally applied morning and evening . After cleansing, and optionally after toning, pat a small amount of serum into slightly damp skin. Then seal in moisture with a cream or moisturizing oil.

Pro tip: When applied to slightly damp skin, HA optimizes its moisture-binding capacity. Follow with an oil or cream for a hydrating, cushiony finish.

Combination with other active ingredients

• Niacinamide: strengthens the skin barrier – together with HA, ideal for dehydration and uneven skin tone.
• Vitamin C: antioxidant protection + collagen support; HA reduces tightness and increases comfort.
• Ceramides & Squalane: lock in moisture and improve skin’s protective function.
• Peptides: complement HA with firming signals – useful in anti-aging formulations.

Common myths & compatibility

Hyaluronic acid doesn't "draw" water from the skin—feelings of dryness are more likely to occur if a pure HA essence isn't followed by a moisturizer. Therefore, always finish with a cream or oil. High- and low-molecular-weight combinations are often the most balanced. For very sensitive skin, look for fragrance-free, minimalist formulations.

Conclusion

Hyaluronic acid is the luxurious base for any skincare routine: instantly smoothing, lastingly hydrating, and versatile. Whether as a light serum under your daytime moisturizer or as a moisture booster in your evening routine, HA visibly increases skin's suppleness, comfort, and radiance.

Sources

1. NCBI – Topical use of hyaluronic acid in anti-aging therapy https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3583886/
2. American Academy of Dermatology – Moisturizers and skin care basics https://www.aad.org/public/everyday-care/skin-care-basics
3. DermNet – Hyaluronic acid in skin care https://dermnetnz.org/topics/hyaluronic-acid
4. Journal of Clinical and Aesthetic Dermatology – Hyaluronic Acid: A key molecule in skin aging https://jcadonline.com/hyaluronic-acid-in-skin-aging/