After 20 or 30 minutes the skin becomes more taut therefore the hair shaft is more exposed that makes it easier. Soon, this became the norm, not the exception to this rule. This entire article is an over-simplification of something like a very complex subject. http://[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@s.jd.u.eh.yds.g.524.87.5