Style · Facts & sources
5 sourced facts about hair, each with the context behind the number. 4 more are in today's round and appear here after it closes.
Answer50 to 100 hairs
Shedding more than that can follow stressful events — the dermatology group lists triggers such as losing 20 pounds or more.
Source: American Academy of Dermatology aad.org
AnswerRed (about 90,000 hairs)
On average, redheads have about 90,000 hairs, versus about 150,000 for blondes.
Source: Wikipedia, Hair en.wikipedia.org
Answer$18.37 per hour
Hairstylists and cosmetologists earned a median of $17.21 per hour.
Source: U.S. Bureau of Labor Statistics, Occupational Outlook Handbook (2025) bls.gov
Answerabout four months after
New mothers may notice extra shedding about two months after birth, and hair usually regains its fullness within six to nine months.
Source: American Academy of Dermatology aad.org
Answer0.017 to 0.18 mm
Even the thickest human hairs are well under a fifth of a millimeter wide.
Source: Wikipedia, Hair en.wikipedia.org