Category: <span>Ingredient guide</span>

• Niacinamide and Tranexamic Acid: The Pairing Behind Most Dark Spot Serums

  Two ingredients that interrupt pigmentation at different points in the process, which is exactly why they keep showing up in the same bottle.

• Retinal vs Retinol: What the Difference Actually Means for Your Skin

  One conversion step separates them, and that step changes how fast a retinoid works and how much your skin has to put up with. A practical comparison.

• PDRN in Skincare: Where It Comes From and What It Really Does

  Salmon DNA went from clinic treatment rooms to $30 serums in about two years. Here is what PDRN is, what the evidence actually covers, and how to shop for it.