Retinol B3 Serum is an anti-wrinkle, regenerating and resurfacing concentrate for evening use. It combines pure retinol with gradual release, retinyl palmitate, niacinamide (vitamin B3) and glycerin to target the look of deep wrinkles and uneven skin texture and tone, with 24-hour hydration. The fluid, hydrating texture leaves a non-sticky finish. Daily sun protection is needed while using it.