Yoon Song Ah (Won Jin Ah) is a senior marketer for a cosmetics brand. Her dream is to create her own cosmetics brand. Meanwhile, Chae Hyun Seung (Rowoon) is a handsome young man working with Yoon Sung Ah as a marketer. He has romantic feelings for her. However, Yoon Song Ah rejects him because she doesn’t want to date young guys.

Based on a 2017 Web Novel of the same name.

Also known as: 선배 그 립스틱 바르지 마요 선배, 그 립스틱 바르지 마요 선배, 립스틱을 쓰지 마 Seonbae, Libseutig-eul Sseuji Ma/  Sunbae, Geu Lipstick Bareujimayo / Sunbae/ Libseutigeul Sseuji Ma Sunbae/ Don’t Put That Lipstick On Senior, Don’t Apply That Lipstick / Sunbae, Don’t Put on That Lipstick / Sunbae, Don’t Put On That Lipstick