Seeking to reveal skins luminosity, philosophys Hope In a Jar Biome-Balance Glow Serum is an ultra-lightweight serum that delivers up to 24 hours of radiance-enhancing hydration. n A powerhouse member of the Hope In a Jar collection, the serum is formulated with a biotechnology prebiotic that targets the skins microbiome to encourage a balanced-looking complexion. AA2G, a stable and potent form of vitamin C, lends brightening properties, while hyaluronic acid works to lock in moisture for long-lasting smooth, supple and radiant results.