What Is Hair? Fine threadlike strands growing from the skin of
humans, Hair is also dead keratin, so the hair you see is not a
living structure. Think of it like The Walking Dead.
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Biology of the Hair Hair is so much more complex than it
appears on the surface. It helps create gender identity and hair is
extremely important to the appearance of BOTH men and women.
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Biology The hair is the only body structure that is renewable
without leaving any scarring.
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Biology At the projection (base of the follicle) is known as
the papilla layer, also known as tiny blood vessels that serve to
feed the cells.
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Hair Growth Your hair follicle forms inside the embryo. When
you are born, you are born with all the follicles that youll ever
have.
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Hair Growth in a growing adults hair, it is about a sixth of an
inch below its surface, which is also known as your dermal papilla.
That is where your hair grows, right at the base, not at the tip,
nor the bottom.
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Hair Growth You have up to 100,000-150,000 hair follicles on
your head that are in a constant cycle that your hair goes through
every three years ; they all cycle through these phases
independently. If all of your hair was cycling all at the same
time, each hair strand would all fall out at the same time and
would be leaving you bald.
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Anagen, Catagen, Telogen (Hair Growth Cont.)
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Chemistry of Hair Chemistry is used a lot when working with
hair. And there a few questions that you need to know the answers
to when dealing with the chemistry part of hair ; What is pH? What
are acids? What are bases?
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Chemistry pH is the quantity of hydrogen ions. Acids are ionic
compounds ; a compound with a positive or negative charge. Bases
are the exact opposite of acids.
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Chemistry There are four different bonds that has to do with
hair. Hydrogen, Salt, Cystine, and Sugar bond.
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Chemistry Hydrogen bonds go along with us changing the shape of
our hair. For example when your hair is wet and youd like to make
it curly with gel, the gel and hydrogen bonds work together to make
that possible. The hydrogen bond is responsible for 35% of the
strength of your hair, and 50% of the hairs elasticity.
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Chemistry Salt bonds are an ionic bond. This helps transfer
electrons from the side chain of an amino acid.
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Chemistry The Cystine bond, also known as the sulfur, or
disulfide bond, is cross links of residue amino acids of the
polypeptide chains in your hair. This helps with the toughness of
your hair. This bond is what helps women permanently wave their
hair.
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Chemistry The Sugar bond is formed by side chain of amino acids
and acidic amino acid group. This helps give moisture to your
hair.
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Myths About Hair You might have heard this one before cutting
your hair helps stimulate growth and or thickness, false. First of
all have you ever thought about this, how is cutting your ends
helping growth when your hair grows from your scalp? Its not! It is
good to trim your ends to keep the split ends at bay, but it is not
going to help your hair grow any faster than it already is.
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Myths and Facts Scalp massage increases hair growth fact. Yes,
scalp massages help stimulate the scalp and increase blood
circulation, however there hasnt been anything to prove that, that
has helped stimulate growth.
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Myths and Facts Lice cling to dirty hair, or people who dont
keep up on daily hygiene false. Lice are actually more attracted to
cleaner hair. Its easier for them to attach themselves too. With
dirtier hair the lice cant attach as easily and wont be able to
make your scalp their new home for a few weeks.
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Myths and Facts Brown hair grows faster and is healthier than
blond hair false. Blond hair is fine, and prone to breakage faster
than brown, but has nothing to do with how healthy or how fast the
different color hair grows. Healthy hair that grows all depends on
how you take care of your hair, not your NATURAL hair color.
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Myths and Facts Cold water helps stimulate hair growth false.
Washing your hair with cooler water doesnt help your hair grow what
so ever, but neither does extremely hot water. Same goes for
thermal products and the sun. Too much heat can severely damage
your hair. That is why washing your hair with lukewarm water is the
best solution.
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Conclusion There is so much to know about hair. I am going to
be graduating hair school in about two weeks or so, and even after
I graduate I will still be learning. Biology, and Chemistry are two
very important things when dealing with hair. You need to really
understand those two subjects to be a successful hair stylist.