What chemicals can destroy a hair follicle?

I'm doing some research on how to keep a healthy head of hair. What chemicals are damaging to the hair follicle and cause hair loss?What chemicals can destroy a hair follicle?
The body can normally take care of toxins via the liver. The liver neutralizes them before they cause any damage. But, when the liver becomes overworked, it lets some toxins slip by. The toxins that slip by turn into estrogen. With the amount of toxins in our environment you can see why the liver cannot do it's job properly. But the problem can be effectively handled.





The liver needs rejuvenating. Take a liver cleansing product for a few weeks to kick the liver back into full gear. Once you do this the liver will handle the toxins more effectively and so MUCH less estrogen will form.





You should also try and eat non-toxic food. Do this by eating as much organic food as possible whilst on the liver cleansing product. By the way, many liver cleansing products exist on the market, and they are all generally very good products.