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: 3B/Corkicelli/Fiii/BSL/light ash brown (colored)/CG since 2008

Likes: V05 Freesia as a co-wash, AOHR, Jessicurl RR & CCSS, banana hair masks, honey
Dislikes: Hairbrushes () and harsh detergents ()