Lysine Hyaluronate: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: July 1, 2025
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We verify all information on this page using publicly available nomenclature standards from The Personal Care Products Council (PCPC), the European Commission's CosIng database and documentation provided directly by ingredient manufacturers. Our analysis is based on technical data from these sources to ensure accuracy and reliability.

What Is Lysine Hyaluronate?

Lysine hyaluronate is a salt made by pairing two well known skin care allies: L-lysine, an essential amino acid, and hyaluronic acid, a moisture-binding sugar naturally found in our skin. Bringing them together creates a smaller, water-loving molecule that dissolves easily and can travel a bit farther into the skin’s outer layers than plain hyaluronic acid. Brands first explored this blend in the early 2000s while searching for ways to improve the feel and stability of hyaluronic acid in creams and serums. Today most suppliers produce lysine hyaluronate by fermenting plant sugars to obtain hyaluronic acid, then adding pharmaceutical-grade L-lysine and allowing them to bond into a stable salt. The result is filtered, dried and milled into a fine white powder ready for cosmetic labs.

You will spot lysine hyaluronate in lightweight hydrating serums, sheet masks, daily moisturizers, soothing after-sun gels, eye creams, makeup primers and even leave-in hair conditioners where extra slip and moisture are welcome.

Lysine Hyaluronate’s Cosmetic Benefits/Uses

This ingredient is prized for its role as a humectant. It attracts water from the environment and from deeper skin layers, holding it at the surface so skin feels plumper, looks smoother and stays comfortably hydrated. In a formula, its small size helps deliver moisture without leaving a heavy film, making products feel light yet effective for both oily and dry skin types.

Who Can Use Lysine Hyaluronate

Lysine hyaluronate is considered friendly for nearly all skin types including oily, dry, combination and sensitive skin. Its lightweight water-binding nature delivers hydration without heaviness so it rarely triggers excess oil or clogged pores. Because manufacturers typically derive the hyaluronic part from fermented plant sugars and pair it with pharmaceutical-grade L-lysine, the finished ingredient is suitable for vegans and vegetarians.

Topical use is generally viewed as low risk for women who are pregnant or breastfeeding, yet this is not medical advice. Anyone expecting or nursing should show new skincare products to a qualified health professional before adding them to a routine just to be safe.

Lysine hyaluronate does not make skin more prone to sunburn, so it is not considered photosensitizing. It also plays well with most other common cosmetic ingredients and can be used morning or night without special precautions.

Potential Side Effects/Adverse Reactions

  • Mild redness or flushing
  • Transient stinging or tingling on application
  • Itchiness or small bumps indicating irritation
  • Very rare allergic contact dermatitis
  • Feeling of tightness in extremely low-humidity environments because water can evaporate faster than it is replaced

If any of these effects occur stop use and consult a healthcare professional.

Comedogenic Rating

Rating: 0 / 5

Lysine hyaluronate is a water-soluble humectant that does not leave an occlusive film or add excess oil, so it is extremely unlikely to clog pores. Its molecules attract and hold water rather than sit in follicles, which explains the lowest possible score.

Suitable for people prone to acne or breakouts.

Formulas heavy in silicones, waxes or butters can still feel pore-blocking even when they feature lysine hyaluronate, so consider the whole ingredient list, not just this single component.

Summary

Lysine hyaluronate’s main job is to pull moisture to the skin surface and keep it there, helping skin look smoother and feel cushioned. By combining the amino acid L-lysine with hyaluronic acid it creates a smaller, easy-to-absorb salt that hydrates without weight.

While hyaluronic acid dominates the hydration spotlight, its lysine-paired cousin is gaining quiet popularity for lightweight serums and gel moisturizers where a fast, invisible finish is prized.

Topical use is considered very safe for most skin types with minimal risk of irritation or allergy. As with any new product though, patch testing is a smart step before full-face use.

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