System 4 is for Advanced
Stages Of Hair Loss of Fine,
Chemically Enhanced
hair
Fine hair feels limp or lacks
body. This type of hair is most
common in Caucasian.
Note: Fine
refers to
the size of the individual hair
strands, which are measured
in microns. A strand of fine
hair is about 50 microns thick
compared to medium hair,
which measures between 60
and 90 microns. Coarse hair
can exceed 100 microns.