Medicube Deep Vita C Serum 2.0 - 14.5% Pure Vitamin CAbout this item Medicube Deep Vita C Serum is a facial serum that is a water based serum with 14. 5% vitamin C and Alpha bisabolol to reduce hyperpigmentation, even out skin tone, and enhance skin radiance. In just one week, see a visible difference with 9. 1% reduction in freckles and blemishes, 4. 8% improvement in skin tone, and 0. 6% increase in skin radiance. The serum also increases skin elasticity by 10. 3% and provides a significant reduction