Plant Polyphenols, Skin Longevity, and the New Science of Aging Well Short Story version Plant polyphenols are being studied for their relationship to oxidative stress, inflammation, mitochondrial function, and senescent-cell signaling in skin. Keys® follows this science responsibly, with a focus on barrier-respecting, age-aware skincare that helps skin look healthier, calmer, and more resilient. Hey,  I have always believed that good skincare should do more than make a surface promise. Skin is living tissue. It reacts to sunlight, stress, dryness, heat, cold, microbes, ingredients, and time. If we want to make better skincare, we have to respect that complexity. That is why I pay close attention when new skin science begins to explain old botanical wisdom in a more precise way. One of the most interesting areas right now is the study of cellular senescence. Senescent cells are sometimes described as older or stressed cells that no longer behave like healthy, active cells. In the body, researchers are studying how these cells may contribute to inflammatory signaling, slower repair, and changes in tissue over time. In skin, this is becoming part of a larger conversation about longevity, resilience, and healthy aging. Now, let me be very clear. Keys® is not […]