Surely more than once you have asked yourself how is it possible that it doesn't hurt to get cut in our hair. The answer is quite simple if we know how the growth mechanism of our hair works. Specialists explain that each of our hairs arise as a result of a secretion. Did you know? This means that each of our hairs is biologically dead. How does a dead "thing" grow then? You may be wondering. Well, it is easy to explain too. The answer is that living cells are at the base of the hair, in each of our follicles, and they multiply and push the secretion up before dying. The result is what we know, that at the base there are always living cells and the rest are all dead cells.
For this reason, having our hair cut does not hurt, but being pulled does hurt us. Hair does not have nerve endings, but the dermis, where the base of the hair is, does have many. In the end, our hair does not stop being, therefore, although in a highly modified form, skin.
In fact, we finished the post about our hair with a detail worthy of the famous CSI research series. Did you know that by analyzing the proportions of oxygen and hydrogen isotopes in our hair and in the water from different places, it is possible to know where we have been in the last year? It seems that substances from the water that we use, the medication that we have to take, the drugs or toxic substances that we met, etc. also end up in our hair. As you can see, our hair thus becomes a type of file or roadmap of our life. Very useful in cases of need!