Help looking for information.

[Dw421]

I'm a new student & began watching the videos & taking notes during my down time while I was sick w/ the flu. There's a portion of a video where Nathan is discussing cleaning your actual makeup products, what can be cleaned, what can't & he explained "double dipping". I wanted to go back to take some notes and for the life of me I can't find what video it's in. Was I having a fever hallucination?!

[Sammi1019]

i believe it was orientation to professional makeup application