Sodium Hyaluronate (Hyaluronic Acid)
Sodium hyaluronate is the salt form of hyaluronic acid, which is also part of the skin's natural structure; it holds water strongly, making the skin look hydrated and plump. In cosmetic use it is among the ingredients in the lowest risk group; it very rarely causes irritation or allergy.
Risk range
1 is the lowest and 10 the highest risk. The range depends on the amount used, whether the product is rinsed off and how it is used. The Temiz İçerik app uses the same ranges.
The lower end applies to almost all products; the upper end only reflects very rare sensitivity reactions and interactions with other ingredients in the formula.
What is sodium hyaluronate and what does it do?
Hyaluronic acid is a sugar chain (polysaccharide) found naturally in our bodies in the skin, joint fluid and eyes. It is known for being able to bind many times its own weight in water. Sodium hyaluronate is the sodium salt of this molecule; it dissolves more easily in water and is more stable, which is why it is used more often in formulas.
When applied to the skin, it forms a thin moisture-retaining film on the surface and helps the skin look plumper and smoother. There are types with different molecular weights: large molecules stay on the surface and reduce moisture loss, while small molecules can penetrate slightly further into the upper layers of the skin.
Which products contain it?
- Hydrating serums and ampoules
- Moisturising creams, gels and eye products
- Sheet and gel face masks
- Make-up primers and some foundations
On the label it may appear as Sodium Hyaluronate, Hyaluronic Acid or Hydrolyzed Hyaluronic Acid. Dermal fillers injected for cosmetic purposes are classed as medical products and are not the subject of this page.
Is it harmful? The scientific assessment
The independent Cosmetic Ingredient Review (CIR) panel has concluded that hyaluronic acid and its salts are safe for cosmetic use. Because it is a substance found in the body's own structure, it is well tolerated by the skin; irritation and allergy are very rare.
A frequently heard claim is that in dry air hyaluronic acid draws moisture from the deeper layers of the skin and dries it out even more. This claim is exaggerated. However, humectants can be less effective in a dry environment if no cream is applied on top to lock in the moisture. That is why applying a hyaluronic acid serum to damp skin and then sealing it with a moisturiser gives the best results.
Who should be careful?
- Very sensitive skin: Problems usually come not from the hyaluronic acid itself but from the fragrance or preservatives in the formula.
- People with rosacea or eczema: It can generally be used comfortably; when switching to a new product, testing it on a small area is a good habit.
What to do when you see it on a label
Sodium hyaluronate suits every skin type and is nothing to worry about. A high price or its position in the list does not on its own determine effectiveness; a simple formula can also provide good hydration. Its effect is enhanced when used together with the similarly moisture-retaining glycerin and panthenol and with barrier-supporting ceramides. It is also a good supporting ingredient alongside drying actives such as retinol.
Frequently asked questions
What is the difference between hyaluronic acid and sodium hyaluronate?
Sodium hyaluronate is the salt form of hyaluronic acid. It is more stable and dissolves more easily in water; its functions on the skin are the same.
Does hyaluronic acid dry out the skin?
Not with normal use. In dry weather, applying a moisturiser on top boosts its effect and stops moisture from evaporating.
Can oily skin use hyaluronic acid?
Yes. Because it is a light, oil-free source of hydration, it can comfortably be used on oily and combination skin too.
How should I use a hyaluronic acid serum?
After washing your face, apply a few drops while the skin is still slightly damp, then seal with a moisturiser. It can be used morning and evening; during the day, don't forget to apply sunscreen on top.
Sources
Updated: 2026-10-11 · How we score
This page is for general information and is not personal medical advice. Warnings on the product label and the advice of a health professional always come first.