Can your skin recover from an eating disorder in your mid 30s?

I have been struggling with issues of depression and anxiety and have been using food to cope with it. Have put on 40 lbs in the last year.

I have just started making dietary changes but my skin is dull as hell. I am making a conscious effort to lose weight, have a better skin care routine but nothing is really showing.

Can you improve your skin in your mid 30s if you change your lifestyle or is it too late?