Post-adoption innovation diffusion is an important area of research that has illuminated consumer innovativeness in product use and extended innovation diffusion. The scale of use innovativeness (UI) proposed by Price & Ridgeway (1983) has produced inconsistent results for the rate-of-use and variety-of-uses for a given product due to the heterogeneity of UI components. This study references the componential theory of creativity to redefine the concept of UI. An SEM comparative model analysis demonstrated that UI should include 2 heterogeneous constructs: curiosity and creativity skills. Curiosity can influence users to accept innovative technologies, while creativity skills influence the degree of product usage. Curiosity is the key to an individual's tendency for new technology adoption and also promotes learning and creative thinking, which in turn leads to the emergence of creativity skills. Through creativity skills, curiosity indirectly promotes use diffusion.