DARK SPOT SERUM WITH NIACINAMIDE 1.0OZ. Benefits: This effective formula helps even skins tone with powerhouse Niacinamide, boosted by Licorice Root & Golden Kiwifruit, to reveal a more uniform, healthy-looking complexion. Dermatologist Tested. Suitable for all skin types, even sensitive. Key Ingredients: Niacinamide: Restores healthy tone and texture and helps skin appear more bouncy. Undecylenoyl Phenylalanine: Helps reduce the look of hyperpigmentation for a more even-toned complexion. Research Results: In a consumer perception study with 30 participants after 4 weeks:. 100% reported this product helped reduce the appearance of their dark spots and made their complexion look more even-toned. 97% reported this product made their complexion look healthier and improved overall appearance of their skin and was gentle and non-irritating to their skin.