There are several driving factors behind doTERRA's decisions to reformulate products. These include discovering more potent botanical extracts that enable more beneficial formulas, transitioning to better, reliable and sustainable supply chains and responding to changes in ingredient availability and regulations. All these factors determine the overall chemistry and aroma as products are reformulated. Though ingredients may shift, doTERRA maintains the original blend and product names if the key benefits are unchanged. Significant research, development and testing is done to achieve optimal new formulas, with input from surveys and professional perfumers. This collaboration allows us to deliver unique fragrance profiles, whilst maintaining efficacy. Our goal will continue to be providing the highest quality essential oils and products that are fit for purpose, and establishing long-lasting sourcing partnerships that help provide the same beloved products for a lifetime.