An overnight serum that features a trifecta of retinol, ferulic acid and niacinamide to improve the appearance of wrinkles and firm the look of skin for an even, instantly smoother-looking complexion. Improve the look of firmness and wrinkles caused by aging and environmental aggressors. This overnight serum delivers a time-released dose of retinol synergistically combined with ferulic acid and niacinamide for visibly smooth, retextured-looking skin. How to use: Nightly, massage 2-3 pumps into clean, dry skin. For optimal results, use following your Ferulic + Retinol Wrinkle Recovery Peel. Follow with any moisturizer of your choice from Dr. Dennis Gross Skincareª. Use sunscreen during the day.