★★★★★
I had severe dandruff for about 5 years, saw a dermatologist, use tar shampoos, etc. One day I read severe dandruff was a sign of sulfur deficiency, and several good sources of sulfur listed was onions and garlic. Just so happened, I had followed a way of eating for years that excluded onions and garlic.
I didn't really believe it applied to me, I thought surely I consumed enough other sulfur foods to not have a deficiency. I immediately prepared a salad with raw onions, and within a day my dandruff was completely gone. That was several years ago, I have continued eating foods with onions regularly and it still works for me. The connection was amazing, and I wouldn't have believed it had I not seen it myself.