Real Vitamin Brightening for Radiant Skin. Highly concentrated Vitamin C is delivered to the skin for transparent & radiant skin & causes immediate even-toned complexion.4 STEP Brightening Effect of Vitamins. The brightening active ingredient triple blocks the cause of melanin pigmentation & the vitamins of Vitamin Tree fermented extract provides a fundamental & intensive brightening care. Visible vitamin effect Vitamin C Crystal.30 years of Coreana technology to encapsulate vitamin derivatives in crystals to strengthen moisture barrier & radiance.