Hair is the most misused, tortured, and taken-for-granted tissue on our entire body. The things we do to it would ruin other parts of the body, but even when damaged and frail, hair keeps going, unless — of course — you lose it altogether. Hair is a body tissue that grows. It is greatly affected by what we put on it, what we eat, the shape of our mental or physical health, and what we expose it to.
Hair grows from follicles all over the scalp. Hair cells are some of the fastest-growing cells in the body. Each person is born with all the hair follicles they will ever have, about five million of them. The follicle grows from beneath the skin of the scalp and is sometimes referred to as a bulb because that is what it looks like. Look at a tulip bulb. It is a rounded teardrop shape and usually has several sheaths coming from the small top. That is exactly what a hair follicle looks like.