Thanks to its dietary benefits, niacinamide — a form of vitamin B3 — already has a healthy reputation. But it's also nourishing for your skin. According to Healthline, niacinamide helps promote the formation of new proteins and lipids, which increases firmness and hydration. It's also a powerful antioxidant that helps safeguard your skin against damage from UV rays, air pollutants, and other environmental toxins. Like retinol, niacinamide is effective at shrinking pores, reducing hyperpigmentation, and softening fine lines and wrinkles.

To boost your skin's resilience, U.K. board-certified dermatologist Dr. Ahmad Chaudhry recommends this supercharged ingredient. "One of the main benefits of using niacinamide is its ability to improve the skin's barrier function. It helps to strengthen the skin's protective barrier, which can reduce moisture loss and improve overall skin health," Chaudhry told us.

Plus, it's suitable for even the most sensitive skin. According to board-certified dermatologist Dr. Alpana Mohta, niacinamide is beneficial for people with conditions like acne, rosacea, and eczema. When it comes to anti-aging, niacinamide works differently than retinol. "Retinol increases cell turnover and collagen production, which can reduce the appearance of fine lines and wrinkles," Mohta told The List. "Niacinamide, on the other hand, improves the skin's moisture barrier and reduces inflammation, which can lead to an overall improvement in skin texture and tone." Chaudhry added, "While it may not be as powerful as retinol in terms of anti-aging benefits, it is still a valuable addition to any skin care routine."