nodisrespect
New Member
Hair is genetically programmed to be straight, curly or wavy, and it tends to change over time.
For many years, it was believed that the shape of a person’s hair was determined by the individual hair shafts, and that curly hair was curly because the cross-section of the hair shaft was flatter and had more intertwined layers than straight hair, which was round. But scientists have determined that whether your hair is curly or straight is determined by the shape of the follicle itself and the direction in which each strand grows out of its follicle. Curly hair is shaped like an elongated oval and grows at a sharp angle to the scalp.
Curly hair has a different biological structure from straight hair. It tends to be much drier than straight hair because the oils secreted into the hair shaft by the sebaceous glands can more easily travel down the shaft of straight hair. People with very curly hair may find that this hair type can be dry and often frizzy.
Hair, whether it is curly or straight, is affected by the amount of humidity in the air. It serves as a "truth serum" for the hair, forcing water back into the hair fiber and forcing hair shaft to return to its original structure. This may be more noticeable in somebody with curly hair because it tends to get frizzy when the humidity rises.
Hair texture variation is likely to have resulted from a significant event in human evolutionary history. Evolutionary biologists agree that the evidence suggests that genus Homo arose in East Africa approximately 2 million years ago. During this time body size increased in response to richer dietary intake. This increase was most likely a reflection of rapidly increasing brain size among members of this genus, which facilitated an increasing intellectual capacity that made more varied dietary access possible (i.e. via new hunting and scavenging techniques etc.). Jablonski et al (2004) postulate that as body size increase, it became evolutionarily necessary to expel heat from the body at a more rapid rate. As a result, humans developed the ability to sweat. They also lost body hair in order to facilitate sweat evaporation and hence cooling of the body.
http://en.wikipedia.org/wiki/Curly_hair#Texture
Did you know that as much as 13% of your hair is made up of water? When your hair is dry, it loses its ability to stretch and breakage occurs more easily. Try using moisturizing shampoos and conditioners. Heat-generating hair appliances like curling irons and blow dryers, and chemical treatments (perms, dyes, bleaching agents) will cause further dryness and damage. If you use any of these devices or treatments, make sure to condition regularly by working the product along the entire hair shaft. If you're using an anti-dandruff conditioner, the technique differs because it contains a medical ingredient targeted at the scalp. In this case, thoroughly massage an adequate amount of the product into the scalp and along the hair shaft. These dual purpose conditioners will restore moisture plus tackle the flaking.
http://www.dermatologycare.ca/apr-17.html
Is anyone following my train of thought? I bolded just in case it got lost in translation somewhere. I wasn't sure whether this was common knowledge or not. I assume it is, but I figured it would be fun to post anyway.
erplexed
I mean... they are opposites.
