Eyebrow hairs are always shorter than hairs on your head because .
A)the vascular supply of the eyebrow follicle is one- tenth that of the head hair follicle
B)eyebrow follicles are only active for a few months
C)hormones in the eyebrow follicle switch the growth off after it has reached a predetermined length
D)they grow much slower

Question

Quizplus · Accepted Answer

Eyebrow follicles have a shorter active growth phase (anagen phase) compared to scalp hair follicles, which limits the length they can grow.

Eyebrow Hairs Are Always Shorter Than Hairs on Your Head