Hyaluronic acid is a naturally-occurring sugar molecule (a glycosaminoglycan) that holds up to 1,000 times its weight in water. In skincare, it pulls moisture into the upper layers of skin, plumping fine lines and creating that 'just-drank-water' glow.
Hyaluronic acid is a water magnet — it pulls hydration into your skin and holds it there.
The clinical evidence for Hyaluronic Acid is strongest in these areas:
Every skin type, every age, every climate. One of the most universal ingredients in skincare.
In very dry climates, apply HA to damp skin and seal with moisturizer immediately — otherwise it can draw moisture *out* of deeper skin layers.
Build a complementary routine — these actives layer cleanly with Hyaluronic Acid.
No major incompatibilities reported. Start with one active at a time, patch test, and wait 24 hours before reintroducing a second active.
Use the Routine Builder to see Hyaluronic Acid in context — with the four other steps that complete a routine.