There are actually very few books that I haven't read more than once. I probably could count them all on 1 hand.

I actually just finished re-reading The Hunger Games and Catching Fire for the 4th time each and I'm about to start again on the third in that trilogy, Mockingjay.
Low Poo: GTTT, TJ's Refresh

Rinse Out: LVP, TJ's Nourish, GFTN, 365, SSCC
Styling: HEBE,
Biotera Curl Cream/Gel, Marie Dean, EW SAJ, Pink Boots, Re:Coil, KCCC, CK