Saian Clinical Strength Eye Serum contains REGU®-AGE PF, as well as the highest quality Hyaluronic Acid available on the market today. REGU®-AGE PF is a unique, high-performing, paraben-free complex of specially purified natural rice and soy peptides which work daily to reduce dark circles and puffiness under the eyes, giving you a refreshed, youthful appearance.