Eucerin Even Pigment Perfector Night contains Thiamidol, an effective and patented ingredient that acts at the root cause of hyperpigmentation by reducing melanin production. It is clinically and dermatologically proven to reduce dark spots and prevent their re-appearance. First results are visible after two weeks and improve continuously with regular use.The night cream also contains Dexpanthenol – an active ingredient known to support skin regeneration overnight. Skin appears even and radiant.