sorry上面9up咗
Obviously hairs on your arms or legs have a very different anagen period than hairs on your head, thus why your leg hair doesn’t grow two feet long without trimming. Further, different people, thanks mostly to their genetics, have differing lengths of the anagen period for a given body part compared to other people.
For the hair on your head, the average length of the anagen phase is about 2-7 years. For your arms, legs, eyebrows, etc., this phase usually lasts just 30-45 days. However, in extreme cases which are quite rare, some people have anagen periods for their heads as small as most people’s anagen phases for their arms and legs. For these people, their hair never naturally grows more than a few inches long, presumably saving them a significant amount of money over their lifetime on barber visits. 😉 The opposite is also true, with people whose anagen phase can last decades for their scalp hair. Both of these extremes are very rare though.
pubic area即係j毛anagen duraion得一個月