Background: Cosmetic use of teenager have been increasing nowadays. There are many cases of skin problems in teenagers due to increasing cosmetics use. Objectives: The purpose of this study is to determine how the use of lip-tint and lip-gloss among teens affect their lips. Methods: The researcher chose twenty female high school students and divided them into a control group and an experimental group after investigating the students’ homogeneity. Students in the control group were asked to apply lip-gloss and the experimental group was asked to apply lip-tint three times a day in the morning, afternoon, and night. The researcher measured the changed amount of dead skin, lip color, and lip moisture before use, after two weeks of use, and after 4 weeks of use. Results: In the pigmentation change experiment for the experimental group, the upper lip coloring increased 9.61% and increased 10.69% on students’ lower lip. With regard to moisture ratio, the students who used lip-tint decreased 48.61% on their upper lips and decreased 43.87% of moisture on the lower lips after 4 weeks of use. Conclusion: This research showed that there were serious causes of tinted lip from using lip-tint. Also, the cause of cracked lips from having dry lips and dead skin on the lips was found. The finding of this study concluded that lip cosmetic products can cause pigmentation and dead skin problems to teenagers.