Hourglass N? 28 Primer Serum 0.33 ounce travel size by Hourglass Go to amazon.com Related posts Which is the best hourglass primer 28? FeatureHourglass N? 28 Primer Serum 0.33 ounce travel size DescriptionA richly concentrated, intensely hydrating, and dual-purpose oil blend serum that treats your skin as it prepares it for makeup.;0.33 ounce travel size