To be honest, I am the last person in the history of the world who should be dishing out hair tips, but I got a good one.
Always make room for conditioner.
When I traveled to Mexico, I didn't check a bag, and when I found myself with limited "plastic bag of liquids" space, I decided that I could ditch the shampoo and conditioner and bank on the resort providing both for me -- I mean, it is an ALL-INCLUSIVE, right?!.
Shampoo = yes
Conditioner = no
Allison = head full of kinky, snarly, frizzy hair for 4 days -- WOW-ZA!