Which of the following ingredients helps in reducing the appearance of wrinkles?

Hyaluronic acid is a powerful humectant, meaning it draws moisture from the environment and holds it within the skin. This ability to retain water is crucial for maintaining skin hydration and plumpness, which can significantly diminish the appearance of fine lines and wrinkles. By keeping the skin well-hydrated, hyaluronic acid helps to restore its elasticity, making it look more youthful and smoother.

In comparison, while silicone, mineral oil, and petrolatum can create a barrier that may temporarily smooth the surface of the skin, they do not actively improve skin hydration or elasticity in the same way that hyaluronic acid does. Therefore, hyaluronic acid stands out as an effective ingredient specifically for reducing the appearance of wrinkles by enhancing the skin's moisture levels and overall texture.