pixi by petra retinol tonic 3.4 fl oz. pack of (1) pixi this potent youth preserving tonic features a unique time-release retinol to help rejuvenate the skin for a natural glow. powerful antioxidants and botanicals replenish the skin for a smoother, softer appearance while soothing sensitive skin. use am and pm. saturate a cotton pad with the tonic and sweepacross face, neck and dãcolletage (avoiding eye area). follow with serum or moisturizer - no need to rinse off.