How Do You Know What's Working?

I often think about this question regarding my hair. As I try different items to improve my hair health and influence my hair growth, I often wonder is it working?

For example, I have been taking hair vitamins for the last year that I actually do think work. You may remember from an earlier post last month when I spoke about hair growth that I couldn't explain - I thought it may have been related to the fact that I was eating way more protein (two hard boiled eggs for breakfast daily), or the B-complex I started taking for better brain function, or the Bamboo Leaf Tea that I started drinking for the ceramide benefit. I say all this to say, although I'm adding one new item at a time, it's hard to tell what's working well and what's not?

I guess if it ain't broke, don't fix it. I'll keep doing what I'm doing until I have reason to stop!