Eyebrow Hairs Are Always Shorter Than Hairs on Your Head

question 40

Multiple Choice

Eyebrow hairs are always shorter than hairs on your head because _ .

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

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