A water-binding polysaccharide used in hydrating skincare.
Sources: 1Hyaluronan, HA
Not assessed
No pregnancy- or breastfeeding-specific assessment has been completed for this record. A cosmetic safety review is not a pregnancy rating.
Not assessed
Hyaluronic Acid
What it does
Supports hydration and surface feel. Sodium hyaluronate, hydrolyzed forms and crosspolymers need their own identity records.
Sources: 1Good for
- Dehydrated-feeling skin
- Hydrating textures
How to use it
Use the finished serum, cleanser or moisturizer as directed. This ingredient does not require a separate routine step.
Sources: 1Who should be careful
The finished formula may sting reactive skin. Do not assume more molecular-weight variants necessarily produce better results.
Sources: 1Pairs well with
No supported pairings have been documented for this record.
Usage, safety and formulation details
Mechanism of action
A hydrophilic polymer associates with water; behavior depends on molecular-weight distribution and chemical modification.
Sources: 1Potential adverse effects
Stinging or contact reactions are possible in an individual product; many other formula components can also be responsible.
Sources: 1Formulation considerations
There is no single molecular weight for all grades. Evidence about injectable fillers does not establish effects of a topical serum.
Sources: 1Pregnancy and breastfeeding
Not assessed
No pregnancy- or breastfeeding-specific assessment has been completed for this record. A cosmetic safety review is not a pregnancy rating.
Safety tags
- Fragrance allergen
- Not assessed
Not separately assessed in this draft.
- Essential oil
- Not assessed
Not separately assessed in this draft.
- Drying alcohol
- Not assessed
Not separately assessed in this draft.
- May irritate sensitive skin
- Not assessed
Not separately assessed in this draft.
What remains uncertain
- Exact concentration, final pH and the full composition of any unprovided finished product
- Exact material, composition and supplier-grade specifications
Clinical evidence and research
Clinical evidence
Evidence for its main benefitNot assessed
The cited references support identity, formulation role or safety context. No standalone clinical efficacy rating has been completed for the main benefit in this draft.
Sources: 1Regulation and ingredient label names
Regulatory information
No jurisdiction-specific assessment is recorded. An inventory listing is not blanket approval.
Names on ingredient lists
hyaluronic acid
Chemical identity and molecular structure
Chemical information
Chemical structure
No single structure to show yet
This ingredient represents a mixture, extract, polymer or ingredient family. A single molecular diagram may not describe its composition.
| Detail | Value | Source |
|---|---|---|
| material scope | Variable material or ingredient family: no single molecular formula, molecular weight or bond diagram describes every grade. | CIR: Final assessment of hyaluronic acid and potassium/sodium hyaluronate |
Content updated 9 November 2026.
Sources (1)
Scientific sources
- CIR: Final assessment of hyaluronic acid and potassium/sodium hyaluronatesafety assessment · 2009
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