Kendall Jenner just proved you don't need a 10-step routine to get glowing skin. The model recently took to her Instagram Story to share the exact mist she's been using for that ultra-dewy, glass skin finish: Anua PDRN Collagen Glow Facial Serum Spray. The under-$20 find has already racked up a loyal following among Amazon shoppers, and in true Jenner fashion, the pick is equal parts effective and low-maintenance - a simple spray that instantly makes skin look fresher, smoother and more radiant.