Possible Clues:

• Reason for seeing the barber for longer is terrifying in the local sense
• It's more frightening needing to be in the barber's seat for longer?
• More perilous
• Hospital with more wind coming through becomes more frightening
• Hospital atmosphere that's initially recommended, but more risky
• More manly-chested
• More hirsute
• More at risk, so having more locks attached
• Having more head cover in hot region, say
• More of a coat gets wind into the heir