This research aims to determine the influence of brand ambassadors, and electronic word of mouth on purchasing decisions Scarlett Whitening. The population in this study are all students of STIA Setih Setio Muara Bungo who used Scarlett Whitening products. The sample in this study was 100 respondents using Non-Probability Sampling with purposive sampling. The data collection technique used research questionnaires and the analysis technique is multiple linear regression analysis. The results shown in this study is brand ambassador doesn't have a significant effect on purchasing decision Scarlett Whitening and electronic word of mouth have a significant effect on purchasing decision Scarlett Whitening.