The Numbuzin No.5+ Vitamin Concentrated Serum is designed to target various skin concerns such as pigmentation, blemishes, and uneven skin tone. It features a powerful antioxidant formula combining 98% pure glutathione, vitamin C, and other synergistic vitamins like vitamin E and Coenzyme Q10. Clinically proven to improve skin texture and brightness within two weeks, it also contains tranexamic acid, niacinamide, and alpha arbutin for enhanced whitening effects. The hypoallergenic formula ensures zero irritation, making it suitable for sensitive skin. For optimal results, apply additional drops to areas of concern.