The Saranghae NiaRetin Complex Duo is a high-performance, dual-serum system formulated to target visible signs of aging with precision and potency. Designed to work synergistically, the duo combines clinically backed actives to address wrinkles, uneven skin tone, loss of firmness, and dullness, supporting youthful, resilient skin over time. 2 Serum System 1) 0.1% Retinal + 2% Squalane Serum Advanced cellular turnover, wrinkle reduction, and texture refinement.  20X more powerful than retinol but without the irritation and side effects. 2) 10% Niacinamide + 1% Glutathione Serum Improves elasticity, fades hyperpigmentation, and strengthens the skin barrier.  A master antioxidant that defends against oxidative stress and promotes a radiant, even-toned complexion. Ingredients That Work. Formulas You Trust. Clean. Cruelty-Free. Fragrance-Free. Paraben-Free.