PurposeThe purpose of this study is to investigate the impulsive purchase of Generation Z of Muslim women on TikTok Shop. The primary attention in this stimulation investigation drives the impulsive buying between the Generation Z of Muslim women customers in Indonesia. This study provides valuable concept to help a company or cosmetic brand grow the marketing strategy for stimulating impulsive behaviour of Generation Z customers on TikTok Shop.Design/methodology/approachAn online survey of 256 Muslim women consumers of the Generation Z was used to collect the data. Covariance-based structural equation modelling was applied to assess the five hypotheses.FindingsThe results of this study indicate that micro-celebrities post authenticity has a positive and significant relationship with utilitarian browsing. However, micro-celebrities post authenticity did not have a positive and significant relationship with hedonic browsing. This study also concludes that utilitarian browsing was found to have a positive and significant relationship with hedonic browsing. Finally, hedonic browsing was found to have a positive and significant effect on reminiscence impulse purchase intention and designed impulse purchase intention.Research limitations/implicationsThe primary limitation is the research sample that only consists of Indonesian TikTok Shop customers. Next, the researchers could examine the research model in several countries to expand its generalisation. The second one, this research does not consider the origin country of a cosmetic product. The future study must investigate the local and foreign cosmetics to see the preference and the differences in the impulsive purchase, especially for Z women generation customer. Third, this study quantifies the intention to buy impulsively so that the following research must investigate the ownership of the cosmetics product that has been bought before. Finally, the research only involves a quantitative research method. The future study must investigate with another approach, such as a qualitative method or mixed-method, in the impulsive purchase intention context.Practical implicationsA cosmetic company or marketer could maximise the authenticity, relevancy and attractive information that is posted by micro media social celebrities or media social influencers. Cosmetic companies or marketers must provide comprehensive information to satisfy customers’ browsing actions. Finally, besides the information related to the limited cosmetics product stock, discount and promotion as the effective strategy to stimulate the impulsive buying, the cosmetics marketing can use gamification, increasing the picture quality and equipping product descriptions, and making educational content.Social implicationsThe existence of TikTok Shop is increasing the number of cosmetics products and competitors because of product’s excessive availability in the market. In the social benefit context, the Generation Z Muslim women can purchase and use various cosmetics product available on TikTok Shop, but customers must be on guard by knowing the cosmetics material to prevent the healthiness. In addition, the existence of TikTok Shop and the impulsive purchases by the Generation Z Muslim women are also increasing the retailer or local cosmetics producer income.Originality/valueThis study is a contribution to consumer behaviour literature by raising the Stimulus–Organism–Response framework used in determining the factors influencing browsing and impulsive consumption of cosmetic products on TikTok Shop.