HP TRIPLE RETINOL RENEWAL EYE SERUM. Benefits: Formulated with a proprietary triple retinol blend, this powerful day & night eye serum reduces the look of under-eye puffiness & uneven texture for a firmer, smoother appearance. Works together with antioxidant powerhouse coenzyme Q10 and naturally-derived beta-carotene (vitamin A) to visibly brighten and minimize dark circles and darkness for a more open, awakened look. Key Ingredients: Triple Retinol Blend: Advanced Skin Recovery. Coenzyme Q10 (CoQ10): Antioxidant Skin Renewal. Beta-Carotene: Anti-Photoaging Support. Research Results: 100% showed significant improvement in skin hydration immediately after application*. 91% showed a significant reduction in under-eye dark circles. 88% showed a significant reduction in under-eye puffiness. Statistically significant reduction in fine lines and crows feet**. *In a clinical study of 34 women. **In a clinical study of 34 women after 4 weeks.. In a clinical study of 34 women after 8 weeks.