Niacinamide (vitamin B3) and hyaluronic acid are commonly combined in skincare; niacinamide supports the skin barrier, regulates sebum, and improves tone, while hyaluronic acid binds water to hydrate and plump the skin. Together they target hydration, texture, and barrier function.
| Reported effect | How often | Notes |
|---|---|---|
| Transient redness or flushing | Uncommon | More associated with niacinamide, especially at higher concentrations; usually mild and short-lived. |
| Mild tingling, itching, or stinging | Uncommon | Can occur on application, particularly on sensitive or compromised skin. |
| Contact irritation or dryness | Uncommon | Concentration-dependent; higher niacinamide levels may irritate some users. |
| Allergic contact dermatitis | Rare | Reported infrequently; patch testing advised if prior sensitivities exist. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.