The medicube AGE-R Glutathione Glow Toner is a bi-phase toner (a separate cream layer and essence layer that blend when shaken) formulated with 500ppm Glutathione, a 6-Peptide complex, Niacinamide, Alpha-Arbutin, and Adenosine. It is designed as a brightening, hydrating toning step that helps comfort dull-looking skin while fitting into a daily skincare routine.