Today I’d like to answer what seems to be the most asked question I get about hair loss products: what is the best shampoo for thin or thinning hair? Well, this is a great question. When I first started researching hair loss, about ten years back, I was super into biology. I researched biology like it was the be all and end all of understanding hair loss. And I remember thinking that the shampoo you use is completely irrelevant and will have virtually no impact on your hair growth, compared with hormones. As the years have gone by my opinion has changed. I’ve swung over more into the chemistry side of hair loss research and in doing so have discovered some amazing stuff about the chemicals we apply to our skin and how they can affect hair growth. Ten years ago I never would have thought that a shampoo you apply to your scalp for a few seconds could have much impact on your hair. Well, it turns out it can.