Quote Originally Posted by Howard View Post
Shave with the blade and see what you get. The HHT is so subjective as to be relevant only when comparing blades with your own hair from the same section of your scalp.
...and generally at the same time as diet can effect the amount of keratin protein in hair which gives hair its strength. Stress can also be another factor.

so many variables to list which make the HHT so inaccurate.