Ingredient · INCI listed
Hyaluronic Acid
Hyaluronic acid is a humectant that holds up to 1000x its weight in water. It draws moisture from the environment and deeper skin layers into the upper epidermis, providing instant plumping and hydration.
Evidence — Well-established
Data summary
Products containing
48
Most common in
19 products
serums
Typical pairing
Niacinamide (Vitamin B3)
Evidence level
Well-established. Extensively studied for hydration efficacy. Multi-weight formulas (combining high and low molecular weight HA) penetrate deeper and provide longer-lasting results than single-weight versions.
Where it shows up