Introduction: The consumption of processed food is increasing in developing countries. Nutrition labels on food packaging are important for the education of consumers, particularly adolescents, to help them make healthier food choices. However, there is evidence to suggest that adolescents generally do not use nutrition labels. This study aims to explore the personal factors that influence the practice of Malaysian adolescents in reading nutrition labels. Methods: The participants were adolescents, aged 13-16 years, from five public schools in Negeri Sembilan. Five semi-structured focus group discussions (FGDs) were conducted. The participants discussed their personal views, knowledge and perceptions regarding the use of nutrition labels and food selection. Data gathered from the FGDs were coded through thematic analysis using the NVivo software. Results: While the participants were familiar with nutrition labels, their usage was relatively low during food selection due to the lack of interest in nutrition information, past experiences, hunger and cravings, time constraints and the taste of the food. The main reasons for using nutrition labels were health consciousness and their curiosity about specific nutrition information provided on the labels. The majority of participants believed that information provided on the labels was accurate because it was provided by reliable institutions. There was also misperception among some participants, mixing up nutrition labels with list of ingredients and the expiry dates. A few participants were unconvinced by the labels and stated that the labels provided misleading information. Conclusion: Personal factors such as knowledge, misperception, awareness and trust significantly impact how adolescents read nutrition labels.