As to the fiberglass tub and shower cleaning, I use a spray cleaner and a Dobie pad (it's a sponge covered with a nylon mesh). The hair oil? Gee, I don't know, but I'd try something like Resolve or Zap foam cleaner. Good luck!

Gel-Gloss Fiberglass Cleaner And Polish is the most commonly recommended product for cleaning fiberglass tubs and surrounds.

Hair oil stain out of furniture fabric? It probably isn't going to work without damaging the original color of the fabric.