In 1992, Rationale founder and cosmetic chemist Richard Parker was inspired to launch his brand by bridging the gap between beauty and medicine. Now, the Melbourne-based business has expanded internationally and just launched its first overseas boutique in Singapore with its partner, Korean beauty giant, Amorepacific. We chat with CEO Shamini Rajarethnam about how the business has tracked in the past 18 months and its local and international plans for the future.