It's almost a mystery, isn't it? My hair squeaks as well. It feels slick and bumpy at the same time, which is very confusing.
F - LP - HD - NE
Fine, low porosity, high density, normal elasticity
Low poo: Burt's Bees Very Volumizing Pomegranate Shampoo
Protein: IAGirl's gelatine treatment
Detangler & LI: KCKT
Beauty Is Not a Number