congrats on Day 13
that is awesome!!!
I'd say what you are going through is normal. Your body is getting rid of all the crap!
My hair was so brittle I could snap it in half. Skin was horrible as all the toxins flushed out.
It will pass
Just think of all the years you were poisoning it, it won't fix itself in a week or 2.
as for the energy - LOL I'm at day 116 and still have days where brushing my teeth is all I can muster. Everyone is different in recovery.
I do take a B Multi vitamin - eat pretty healthy and exercise regularly to help.
hang in!