Hyaluronic Acid
HA, Sodium Hyaluronate
AStrong clinical evidence (multiple RCTs)Safety: Safe
Chemical Function
Humectant that binds water and plumps the skin.
Scientific Evidence
Well-established hydration and viscoelasticity effects; smaller-molecule fractions penetrate deeper.
Quality of EvidenceStrong
Interactions
Pairs with almost everything; apply to damp skin and seal with a moisturizer to prevent drawing moisture from deeper layers in dry climates.
Pro-Aging Relevance
Restores the plumpness and hydration that decline with age and hormonal change.
The Science Behind Hyaluronic Acid
Hyaluronic acid is a molecule that holds up to 1000x its weight in water. Aging skin makes less of it. Applied to damp skin and sealed with moisturizer, it visibly smooths fine dehydration lines.
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