Pat McGrath Labs IntensifEyes Artistry Wand
You might think of this product as just a primer pen, but the multifunctional wand actually combines Mother Pat’s best-kept makeup secrets into one easy-to-use product. The pen has a clear, hydrating formula that not only improves your shadows’ adherence and longevity, but also amplifies their vibrancy. You can apply it as a base—like you would any primer—or you can even use it on top of shadows when you want to layer your look. Sephora.com