Hair is not an excretion channel because the quantity of elements measured in hair is miniscule. For an example,
my mercury hair content is .67ug/g....This is an amount that is so small that if hair was part of the detox system it would
be a tiny one. Calcium content in hair is for example on average 500 ug/g....ie a thousand times that of mercury.
The bald reference was made because you mentioned that hair is part of the excretory or detox system. If that was
true, people with no hair would be very toxic and people with abundant hair would be very healthy..its.simply not true.