"Maybe applying makeup together with friends can be more enjoyable, but your skin can have problems if the cosmetic products are used interchangeably. Cosmetic products can be a means of transmitting bacteria, viruses, and even eye infections. Especially if the makeup products used are not very hygienic."

3. Use Expired Products Using expired products is dangerous for skin health. This not only applies to makeup, but also skincare. Expired products contain bacteria that can cause skin irritation, eye infections, and allergic reactions. Therefore, pay attention to the expiration date and period of use! 4. Use Products Excessively Using excessive makeup products can clog pores and cause the appearance of blackheads and acne.