Hourglass' newest offering is going to be a summer staple. The No. 28 Primer Serum is a light serum blended with 28 ultra-rich ingredients: 14 essential oils, including lavender, vanilla and clove; 10 lipid-rich plant oils, like jojoba, hazelnut and green tea; and four vitamins, including A, B5, C and E, to give you a flawless complexion while hydrating and protecting it from the elements. It evens out pores for photo-ready makeup and is perfect for any skin type. Dry skin will receive an added boost of moisture and oily skin is tamed to reduce excess shine. It's already a cult favorite among celebrity makeup artists such as Jenn Streicher and Amy Nedine (who count Emily Blunt, Claire Danes, and Lauren Conrad as clients). But, the Primer Serum is not only good as a daytime skincare regimen. It can also be used as a night treatment and hair treatment to help diminish split ends. Two lucky readers will receive a bottle of the No. 28 Primer Serum valued at $65.