Episode 2: The First Meeting
Episode 3: Color Pop Pop
Episode 4: Skin Tone (What are Jung IlHoon and Yoo Seonho's Personal Color?)
Episode 5: Beauty Power (Ilhoon vs Seonho Beauty Exam)
Episode 6: Coverage (Ilhoon & Seonho takes on the Lie Detector Test)
Episode 6.5: Special extra episode
Source: Beautiology's YT
This is such a funny show. We see Lena fangirling over Seonho and Ilhoon being a brat. I live for Ilhoon's crazy reactions and Seonho's innocence.