Are makeup primers a vital step for longevity or an unnecessary cosmetic add-on? In this episode, we unpack the science of primers and fact-check their real-world necessity. We break down formulation differences—specifically how silicone and water-based primers interact with your foundation—and how they perform across different skin types. Learn to identify product claims versus actual results when it comes to texture smoothing, oil control, and grip. We provide a practical checklist for your morning routine, essential questions to ask yourself before buying a new primer, and the exact scenarios where skipping this step will actually improve your final makeup look.