maybe it can have a role in mantaing, I know very melatonin for hair but don't regrowth fallen hair some years before.
Another thing about the authors Disclosure:Q-SkinScience® provided the nutritional supplement for the study. Dr. Martin Zaiac is a shareholder in Q-SkinScience®.
I don't see how it's possible in this age of technology, people don't realize they can objectively assess these things. Companies like Spectracell, Genova Diagnostics can test for about every micronutrient in your body that impacts hair growth the hair supplement companies put in their products. And you can find out via 23andme, Genetic Genie, if you can even metabolise many of these nutrients. But, as usual, there are profits to be made on the backs of fearful, desperate and ill-informed people.
Common baldness have a special pattern, then we always need ask us, why only certains hairs suffer the problem? Is there any difference in mineral/vitamis, etc. only in an area of scalp? The answer, generally, is not.