Low-irritating Retinol serum to target fine lines and wrinkle supporting skin's natural firmness for a bouncier, more resilient look 99.8% purity patented retinol-some 1.9% + 99% purity NMN – Powered by a 5-Synergy Complex for multi-dimensional and lont-lasting skin firming. Designed with low-irritation technology, this intensive retinol serum delivers high efficacy while maintaining skin comfort. Gentle enough for sensitive and acne-prone skin.