Hyaluronic Acid
- Effective dose
- 0.1–2 %
- Evidence
- 3/5· Moderate
Last updated June 1, 2026
What it is
A glycosaminoglycan that holds many times its weight in water. Topical hyaluronic acid is a humectant that draws moisture into the upper layers of the stratum corneum.
Benefits
Immediate skin plumping and hydration. Effects are surface-level and reverse when use stops; consistent application is required.
When to take it
Use morning and night, applying to slightly damp skin and sealing with a moisturizer to lock in hydration. It layers under sunscreen and other actives without conflict.
Side effects
Very well tolerated. In low-humidity environments hyaluronic acid can pull moisture from deeper skin layers if not sealed with an occlusive moisturizer.
Sources
Products containing Hyaluronic Acid
No products in our database contain this ingredient yet.