The growth of Muslim population continues to increase and is expected to continue growing up to 2.2 billion by 2030. This makes the demand for halal products increase. However, it is not followed by supply from a trusted manufacturer for the halal product. This study wanted to know how the perception of halal in Islam can affect one's intention of repurchase judged from the level of religiosity, knowledge, attitude and its impact in determining the intention of repurchasing halal cosmetics in Indonesia regardless of their religion. A total of 354 usable questionnaires from respondents over the age of 18, who purchased cosmetics in the last 6 months were used. This study used a self-administrated questionnaire with closed-ended questions. Data analysis was performed using conclusive descriptive cross-sectional analysis and Structural Equation Modeling (SEM) method using LISREL 8.51 software. The results in the study showed that there is a significant impact of religiosity and knowledge of the customers toward intention to repurchase halal cosmetics on an indirect relationship. The purpose of this study is to increase awareness of the society about the importance of halal products, not only for internal use but also external use. The mediating variable, attitude, become a significant variable to mediate the influence of religiosity and knowledge toward intention to purchase halal cosmetics. Meanwhile previous study showed that only religiosity has a significant result.

With the shifting trend from gifting behavior to self-gifting behavior, retailers are faced with a new challenge to win their consumers' heart, especially Millennial consumers. Additionally, the growing landscape in a retail environment and the more options that consumers face when shopping may result in a dissatisfied feeling with their buying, and trigger the regret feeling afterward. This study aims to analyze the antecedent factors that drive a consumer to perform self-gifting behavior, and the influence of self-gifting behavior performed towards post-purchase regret. As previous studies found, hedonic shopping traits and indulgence are the drives of self-gifting behavior performance on consumers. With 292 respondents chosen using purposive sampling to join this study, and by using Structural Equation Modelling (SEM) technique for analysis, this study proves that there are strong and positive relationships between two antecedent factors mentioned above towards the four categories of self-gifting behavior, except hedonic shopping traits toward celebratory self-gift. This study also revealed that the four categories of self-gift behavior do not have a positive impact towards post-purchase regret of Millennial consumers. However, indulgence has a positive influence towards post-purchase regret of Millennial consumers.