How many times has this happened to you? You're in your bathroom testing out a new hairbrush or shampoo, and you happen to notice lots of hairs falling out. You immediately stop using the product and swear off it for life. But guess what? It might not be the brush's or the shampoo's fault. Hair can fall out due to a change in routine, which is why you're supposed to give your hair a couple of days to adjust to a new product. This is just one of the many new things we recently discovered about hair after chatting with Martha L. Medina, PhD, Quality, Research and Development Director for Innovative Brands, LLC (the makers of Pert Plus). Here are a few more things we bet you never knew either…
1. The only places on the human body where we don't grow hair are on the palms of our hands, the soles of our feet and our lips.
2. If you pull out a hair that is at the end of its life cycle, it won't hurt.
3. Hair grows at a rate of 3 mm per day. That's 3 to 4 inches per month.
4. On average, a person can have 100,000 to 150,000 hairs on his or her head.
5. A person can lose 50 to 100 hairs per day.
6. The average life of one hair is between four and seven years.
7. Each time a hair falls out, a new one grows in its place (this can happen up to 20 times in a lifetime).
8. The actual shape and size of each hair is different for African-Americans, Asians and Caucasians.
9. Even perfectly straight hair is curly. Here's why: All hair twists as it grows. However, straight hair twists fewer times per unit of length. The number of twists in a given length of hair will determine how straight or how curly it will be (more twists equals more curls).
10. It is unknown why people develop dandruff.