Hyaluronic acid serum primarily acts as a humectant, drawing moisture from the air into the skin to hydrate and plump it. This can reduce the appearance of fine lines and wrinkles, leaving skin looking smoother and more radiant.

Yes, hyaluronic acid serum is generally safe for daily use. Consistent application helps maintain skin hydration levels and can contribute to long-term skin health, but always follow product instructions.

In very dry environments, hyaluronic acid can potentially draw moisture from deeper layers of the skin if there isn't enough humidity in the air, leading to dehydration. Dermatologists may advise against using it alone in such conditions, recommending pairing it with an occlusive moisturizer.

While generally safe, avoid mixing hyaluronic acid with strong exfoliating acids like AHAs/BHAs at the same time, as this can over-exfoliate the skin and cause irritation. It's best to use them at different times of the day or on alternate days.