As an add on to my previous comment I have contacted certain websites ( Norgil/ La Roche-Pasay) about the 25 to 30 estimate or limit on hair follicle production in a lifetime and they have never replied.It must be noted that they and others are trying to sell tablets or medications that...
The number a hair on a scalp can cycle depends on the health of the follicle and is not a set number after all eyebrow hair cycles a couple hundred times in a lifetime.The 25 to 30 times is pure speculation not based on science.