 It's the same reason you see a pothole in the road. Once they put down a new road, it's nice and smooth, and over time those oils dry out, and slowly you see cracks develop. Eventually there's a pothole, and then you see them coming in and replacing the road. So it's really the same thing. You guys seem to be using a better product to reverse this aging. How does this work? So this is a plant-based treatment, so it's 100% safe. It's USDA-certified, bio-preferred.