What do you mean?She’s not making the tube dirty again.She’s just cleaning out the used lip gloss tube and filling it with new lip gloss so it can be used again.
If you’re gonna do this yourself do this yourself remember to put the stopper back in the bottle. It keeps excess lipgloss from getting all over the wand when you use it and more importantly it keeps the lipgloss from leaking if you take it anywhere especially if it gets warm.