NEW YORK, July 29, 2026 /PRNewswire/ -- COSRX, the global derma skincare brand known for its essentials-only approach, announced today that it secured five top-five category placements on Amazon U.S. during Prime Day 2026, held from June 23 through June 26. Leading the impressive results, the Low pH Good Morning Gel Cleanser ranked No. 1 in Facial...