Medicube Retinol NMN Radiance Booster 1.9% Serum - 30mlExperience advanced age defying skincare with the Medicube Retinol NMN Boosting Serum 30ml. This powerful serum combines 99. 8% pure Retinol some (1. 9%) and 99% pure NMN (Nicotinamide Mononucleotide) to deliver visible firming, wrinkle reduction, and skin renewal. Infused with Hyaluronic Acid, Vitamin C, Panthenol, and Ceramides, it deeply hydrates and strengthens the skin barrier for a smoother, firmer, and radiant complexion. Its low irritation