Circumference NYC's botanical formula is designed to deliver the highest level of efficacy for deep skin nourishment. Every product we make is carefully blended with powerful, plant-derived actives proven to be highly effective, safe and stable. The science is clear - not all ingredients are created equal. The key to true efficacy is bioactivity, the percentage of a nutrient in a given substance that is actually available and active to your body. Circumference NYC sources only native plants with high bioactivity, a natural benefit of healthy growth of plants in their native, biodiverse environment. We use state-of-the-art ingredient testing methods to analyze every material we consider for use in perimeter formulations. Only the highest bioactive extracts with the purest molecular profile are passed.