Essano Niacinamide Concentrated Serum is concentrated serum helps to improve uneven skin tone to refine the appearance of enlarged pores. This light-as-water formula has been developed with antioxidants to calm breakouts, reduce excess oil and gently hydrate, helping to improve skin texture and smoothness. 10% Niacinamide (Vitamin B3) works to reduce the appearance of skin blemishes and congestion, while balancing natural sebum levels for a shine-free complexion. 5% Acetyl glucosamine replenishes the skin, improving elasticity and works in tandem with Niacinamide to brighten the complexion.