In the contemporary era of marketing 4.0, the utilization of technological marketing methods holds significant importance for businesses. Consequently, the emergence of Key Opinion Leaders (KOLs) represents a crucial marketing strategy that demands attention. KOLs serve as representatives of firms, engaging with consumers, fostering trust, and influencing favorable consumer behaviors. Hence, this research was formulated to identify and evaluate essential factors associated with KOLs, prioritizing and delineating specific solutions. This research inquiry comprises two main sections: part 1 consolidates pertinent theories to construct models through qualitative methodologies. Subsequently, in this part 2, the study will delve into analyzing data based on the varying impact levels of 04 key influencers on the purchasing intentions of young consumers, namely expertise, likability, reputation, and interactivity, with trustworthiness playing a mediating role in this framework. The findings reveal a hierarchical order of impact for 03 factors: credibility (expertise and likability), interactivity, and reputation. Lastly, this research paper also presents implication management recommendations.