Can I use grease that isn't hair grease?

Yes, but you may want to look for a "bikini area" formula to avoid irritation.

Use grease. It’s longer lasting. When it heats up from riding, it becomes more liquid like and less like jelly. After riding, it cools back down and gets like jelly...

If your hair is severely damaged, it will not be possible to get a color that requires pre-lightening, such as pink, without risking severe damage and breakage.

For Danny, pick up a bottle or tin or pomade. Pour it on a comb and comb it through your hair. Sandy likely uses curlers to give herself big curls.

What you call curly is barely even wavy. You don't need to straighten it. You'll be fine.

You could wash your hair with normal shampoo, or try dry shampoo if you don't have time to wash your hair.

Pull it up into a bun, or a low bun, or try two french braids. These styles can help to minimize the volume of your hair without too much work.