Sometimes to understand how our skin ages and why we experience unwanted skin issues, we need to get a little scientific. If you’re already using climate smart skincare or if you’re simply curious about it, then we know you’ve got the brains for this. So let’s break down the free radical theory of aging. Your entire body is made up of molecules, which are broken down further into atoms that are composed of pairs of electrons. Free radical damage occurs when an atom in the body is missing an electron, so it becomes unstable and tries to take electrons from skin atoms. Free radical damage to the skin’s DNA can expedite the visible signs of aging in the skin, including discoloration, sagging, and fine lines.