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/B/Bottiicelli/Fiii/BSL/dark ash blonde (colored)/CG since 2008

Likes: Curls Coconut Curlada conditioner, As I Am leave-in conditioner, marula oil, Curls Creme Brulee cream and Goddess Curls gel, banana hair masks, honey
Dislikes: Hairbrushes () and harsh detergents ()