Hyaluronic Acid in Skincare

What Hyaluronic Acid Does in Skin

Hyaluronic acid is a glycosaminoglycan — a naturally occurring polysaccharide found throughout the body, with particularly high concentrations in the extracellular matrix of the dermis. In skin, HA plays two critical structural roles: it holds water within the dermis and epidermis, maintaining tissue volume and turgor; and it contributes to the structural integrity of the extracellular matrix, influencing skin elasticity, firmness, and wound healing response. Chronological ageing and photoageing both reduce HA concentration in skin through decreased production and increased enzymatic degradation. The result is clinically observable: increased transepidermal water loss, reduced skin turgor, fine lines and wrinkles, and a progressive loss of the plump, hydrated appearance associated with younger skin. (Papakonstantinou et al., Dermatoendocrinol, 2012; Gosiya et al., review, 2025.)

Published clinical and laboratory studies identify the following primary mechanisms of topical sodium hyaluronate relevant to skincare:

1. Humectant hydration and water retention

Sodium hyaluronate is classified as a humectant — it draws water from the dermis into the stratum corneum and epidermis, and from the environment when humidity is high. Its extraordinary water-binding capacity (up to 1,000× its mass in water) maintains skin hydration at the surface and within the epidermal layers. Clinical studies have consistently demonstrated improvements in skin hydration, softness, and transepidermal water loss with topical sodium hyaluronate application. (Parikesit Muhammad et al., Archives of Dermatological Research, 2024; JCAD multi-weight HA study, 2024.)

2. Barrier function support

By maintaining adequate hydration in the stratum corneum, topical sodium hyaluronate supports the integrity of the skin barrier, reducing transepidermal water loss (TEWL) and the susceptibility to environmental irritants and allergens that accompanies dry, compromised skin. A 2024 double-blind randomised controlled trial demonstrated significant improvements in skin hydration in elderly patients with xerosis cutis following topical sodium hyaluronate application. (Parikesit Muhammad et al., Archives of Dermatological Research, 2024.)

3. Anti-aging and skin rejuvenation

Reduction of HA in the dermis with age contributes directly to fine lines, wrinkles, and loss of skin volume and elasticity. Topical sodium hyaluronate replenishes surface hydration and creates a film that temporarily fills and smooths the appearance of fine lines. Multi-weight HA formulations combining high and low molecular weight species have demonstrated measurable improvements in skin rejuvenation parameters in clinical evaluation, with low MW HA penetrating to deeper epidermal layers to promote collagen synthesis and tissue regeneration beyond the surface hydration delivered by high MW HA. (JCAD Clinical Evaluation of Next-generation Multi-weight HA, 2024; Gosiya et al., 2025.)

4. Anti-inflammatory and receptor-mediated activity

Hyaluronic acid interacts with cell surface receptors including CD44 and RHAMM, influencing cellular signalling pathways relevant to inflammation, wound healing, and tissue repair. High molecular weight HA has documented anti-inflammatory properties; low molecular weight HA fragments have been shown to interact with different receptor pathways relevant to skin regeneration and collagen production. (Gosiya et al., MedCrave review, 2025.)

Why Molecular Weight Matters — The Critical Formulation Variable

Not all hyaluronic acid behaves the same in skin. Molecular weight is the single most important variable determining where in the skin HA acts and what it does there. Current evidence distinguishes three key categories:

High molecular weight HA (HMW-HA, >1,000 kDa) — remains on the skin surface and in the upper stratum corneum. Creates a protective film that reduces transepidermal water loss and provides immediate surface hydration and plumping. Anti-inflammatory. Does not penetrate to the epidermis or dermis. (Essendoubi et al., Skin Research and Technology, 2016.)

Low molecular weight HA (LMW-HA, <500 kDa) — penetrates into the stratum corneum and epidermis. Stimulates collagen synthesis, promotes tissue regeneration, and interacts with intracellular HA receptors (CD44, RHAMM) involved in skin repair. A 2024 randomised controlled trial found LMW-HA to be more effective than HMW-HA in replenishing hydration in the ageing stratum corneum of elderly patients with dry skin. (Parikesit Muhammad et al., Archives of Dermatological Research, 2024.)

Multi-weight HA blends — a 2024 JCAD clinical study evaluated next-generation multi-weight HA formulations combining HMW and LMW HA species for complementary delivery: surface hydration from HMW-HA and deeper epidermal penetration with collagen stimulation from LMW-HA. Multi-weight approaches have emerged as the current best-practice formulation strategy for broad-spectrum HA skincare benefits. (JCAD Clinical Evaluation of Next-generation Multi-weight HA, 2024.)

Note for the client (do not publish): EVIK™ LyoPearl Hyaluronic Acid is available with specified molecular weights. Contact Evik Diagnostics to discuss HMW, LMW, or multi-weight sodium hyaluronate bead formulations for your specific product development requirements. — Suggest surfacing this as an on-page callout box rather than body text.

Why Freeze-Dried Bead Format for Hyaluronic Acid?

Hyaluronic acid in aqueous solution is inherently susceptible to microbial growth. Conventional HA serums and creams require preservatives to maintain microbiological safety across shelf life — a direct conflict with preservative-free and clean-beauty brand positioning. Repeated opening of multi-use HA products introduces contamination risk and contributes to gradual degradation of the HA over the product's use period.

EVIK™ LyoPearl Hyaluronic Acid removes water from the formulation, eliminating the conditions that require preservatives and the degradation pathways that reduce HA activity in aqueous multi-use containers. Each bead delivers:

• No preservatives. Without water there is nothing to support microbial growth.

• Intact sodium hyaluronate at every application. The HA is sealed in dry form until dissolved at the moment of use, with no degradation from repeated opening.

• Precise single dose. 3.1 mg bead at 23.1% sodium hyaluronate dry weight, same concentration every time.

• Ambient storage. No refrigeration, no cold chain.

• Clean label. No preservative system required in the ingredient list.

For skincare brands developing on preservative-free, waterless, or clean-beauty credentials, the lyophilized bead format delivers the HA benefits the evidence supports without the formulation compromises that aqueous HA products require.

Skincare Use Cases and Formulation Applications

For skincare brands, formulators, and product developers, EVIK™ LyoPearl Hyaluronic Acid supports the following product development contexts:

• Preservative-free hyaluronic acid serum — single-dose bead delivering fresh sodium hyaluronate at every application without the preservative system required in conventional HA serums.

• Two-component HA system — bead paired with a botanical water, niacinamide solution, or other liquid activator in dual-chamber packaging; HA never contacts water until use.

• Hydration-focused treatment formats — intensive hydration single-dose beads for dry, dehydrated, or mature skin product lines.

• Multi-ingredient lyobead formulations — sodium hyaluronate can be co-formulated with other actives (vitamin C, collagen peptides, active peptides) in a single bead; contact Evik Diagnostics for custom formulation options.

• Clean beauty and waterless skincare — preservative-free, clean-label hyaluronic acid in a format that fits waterless and free-from brand credentials.

• Travel and sample-size formats — ambient-stable bead, no liquid volume restriction for air travel, no refrigeration.

• Molecular weight evaluation — research comparison of HMW, LMW, and multi-weight sodium hyaluronate delivery via lyophilized bead versus conventional aqueous serums.

EVIK™ LyoPearl Hyaluronic Acid

EVIK™ LyoPearl Hyaluronic Acid is available for research and evaluation. Each bead contains 3.1 mg of freeze-dried formula at 23.1% sodium hyaluronate dry weight. Available in specified molecular weight grades. Supplied as 10 LyoPearls per vial.

• → View product specifications, formula, and use instructions

• → Request a sample or discuss molecular weight specifications

• → Custom multi-weight HA lyobead formulations at evikdiagnostics.com 

EVIK™ LyoPearl Hyaluronic Acid is part of the EVIK™ LyoPearl range of freeze-dried skincare lyobeads, developed by Evik Diagnostics — built on 15 years of freeze-dry bead expertise across diagnostics and life sciences.