Yes, it is better to throw away your make up if your get pink eyes. This is because that people who get pink eyes usually have some secretion coming out of their eyes, and there are plenty of alergens such as bacteria or viruses in the secretion. And these secretions can be in touch with nearly everything arround the patients, including the makeup. If the patients still use the makeup which may have been infected by the secretion can make their eyes get superinfection from the secretion, which makes the patients' eye conditions ever worse. Besides, the makeup of the patients is also very contagious for other people. Therefore, for the sake of the health both of yourself and other people, you had better throw away your makeup.