The Novology Pigmentation Reduction Bi-Phasic Serum For Dry To Combination Skin, powered by HNR-3 technology, combines Hexylresorcinol, Niacinamide, and Retinyl Propionate to visibly reduce hyperpigmentation, dark spots, and post-inflammatory hyperpigmentation (PIH). Clinically proven from week 4, the serum addresses three pigmentation pathways for comprehensive results. Hypoallergenic and non-comedogenic, it offers effective and gentle care.