It's lipstick, lipgloss, lipglaze.
It's not LIPPY.
That is a ghastly leftover phrase from the far distant 1950s and as Parisite H would say, "So last century".
Imagine the elegant Audrey Hepburn in an elegant Hubert Givenchy creation.
Can you then see her open her mouth and say, "I gotta fix me lippy. Won't be a tick."
NO! NO! NO!
Repeat after me, "I am going to refresh my lipstick."
Blokes are excused from the exercise but not from using the lippy word.
I will instinctively kill, not maim, but kill if this word is used anywhere near me.
Now for something completely different. Is it 'fly' or 'flies'?
Since men have only one thing to hang out of it, I'm inclined to use the singular but I could be wrong.
Serious discussion is warranted.