I'm wondering if my hair's extreme dryness could be because of a medication I take for bipolar disorder (lithium).

The drug seems to suck moisture from everywhere else on my body; frequent thirst is a side effect I've been experiencing, especially since the doctor upped my dose recently.
Name: FeedYourHead's Hair

Description: 3A/3B, Botticelli, fine, thick, medium-high porosity, APL, dark ash blonde (colored),CG since 2008

Likes: VO5 Passion Fruit Smoothie conditioner or Suave Everlasting Sunshine conditioner (as cowash); Curls Coconut Curlada conditioner; As I Am leave-in conditioner; Carol's Daughter Tui oil; Curls Creme Brule cream; banana hair masks; honey
Dislikes: Hairbrushes () and harsh detergents ()