Collagen is the foundation of youthful, resilient skin. This structural protein provides the strength, elasticity, and firmness that keep your complexion smooth and plump. But here’s the reality: as early as your 20s, collagen production begins to decline as well as its quality of function. Over time, this slowdown—combined with...

A few months ago, I went to the dermatologist with a laundry list of skin concerns ranging from dark spots to uneven texture. And—in the plot twist of all plot twists—she told me that my issues were likely a result of my lengthy, billion-step skin-care regimen (I'm a recovering shopping...