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High Ph Hair
Products
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Scalp products
Do
Body Wraps Really Work
Breast Lift
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Damaged Hair
Causes
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causes
What does trea tree
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What causes
Onychomycosis?
Essential Oils
For Your Hair
What You Should Know About Your Hair
People have
always been obsessed with their hair and hairstyle. Proof of that
are the many hair products and hair product commercials flooding the
print, radio and television media. Our hair is also a form of
protection for our head from injuries and extreme heat or cold. Our
hair is often referred to as our crowning glory so taking care of it
is very important in order for it to look healthy and shiny—and our
diet plays a major role in the nourishment of our hair.
Hair grows only
on mammals. Although if you look at it closely, insects also have
hair-like strands that seem to resemble hair, they are not
scientifically considered as such. There are different kinds of
hair and the variations in color, shape, length and strength are
different from person to person. But the structure of each strand
is fairly identical. On the average, each person as around 100,000
head hairs and we lose about 50 to 100 hair strands a day. The part
of the head where our hair grows is called the scalp. This article
will focus mainly on
hair growing
on the scalp and we will not be discussing hair growth on other
parts of our body.
To put it
plainly, hair is a protein called keratin which grows from the hair
follicle. The hair follicle determines whether a person will have
straight or curly hair. If the hair follicle has a shape that is
round or oval, then the hair will either be straight or wavy. If it
is elliptically shaped, then the hair will be curly. Although there
are blondes, redheads and brown-black hair, they are all colored by
a pigment called melanin. Our hair contains the following
elements: carbon, oxygen, hydrogen, nitrogen and sulfur. They are
all needed to make the amino acids, keratin, protein and melanin.
Each hair strand
is made up of three layers and each layer has its own unique
purpose. The outermost part of the hair is called the cuticle.
Viewed from a microscope, the cuticle is an overlapping,
transparent, scale-like layer whose sole purpose is to protect the
second layer. But wait, aren’t nails called cuticles also?
Exactly! Nails and hair cuticles have exactly the same
composition. Nails are just compacted cells while hairs are in
strands.
The second layer
contains the melanin pigment and is called the cortex. These
elongated protein fibers are tightly bonded together and are
responsible for the strength and color of our hair. It accounts for
90% of the hair’s weight! Chemical changes take place in this area
when you change
hair color, curl or relax your hair. If the cortex is too dry,
your hair will become brittle and split ends will occur.
The last and
innermost layer of hair is called the medulla. This is the pith or
the marrow of each strand and is connected to the root in the
follicle. Scientists have yet to determine the specific purpose of
the medulla and it is interesting to note that blondes lack this
innermost layer.
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