Good for you on 24 days. It feels good doesn’t it? One day at a time.
I don’t have a suggestion for the eczema myself but I just want to say I hear you. Feeling dissatisfied about our bodies is a hard feeling 
but you’re keeping it in perspective and that’s important 
Take it one day at a time and don’t give up (about sobriety, or skin). You’ll find what you need.
Aaaaand - I just thought of this - there are people here on Talking Sober who have a passion for skincare - maybe they have ideas? Here’s a thread: