Transcript HAIR-WITH-ANSWERS File

HAIR, SCALP & CONSULTATION
HAIR
THE HAIR SHAFT
THE MEDULLA
THE CORTEX
THE CUTICLE
THE CUTICLE
CLOSED
OPEN
POOR CONDITION
OPEN CUTICLES
Porous
Chemicals
enter
Poor cuticle
condition
GOOD CONDITION
CLOSED CUTICLES
Resistant
Chemicals cannot
enter as easily
Good cuticle
condition
TASK 1
POROSITY TEST
1. Get into pairs and carry out an
analysis of each others hair
condition.
2. Look at the hair.
3. Listen and discuss previous
treatments.
4. Feel the hair; this tells you a lot
about the condition.
5. Carry out a porosity test.
6. Discuss the findings
TAKE A FEW STRANDS OF HAIR AND
WITH ONE FINGER & ONE THUMB
SIDE DOWN TOWARDS THE SCALP.
THE MORE RESISTANCE FELT, THE
MORE POROUS THE HAIR.
TASK 2
Label the diagram and fill in the missing words from
the list at the bottom of the page.
The cuticle is made up of SEVEN to TEN
layers of overlapping scales. These scales
are TRANSLUCENT, like frosted glass, so that the hair
colour can be seen through them.
The cuticle is very tough and holds the whole hair
together, but it may be damaged by HARSH
CHEMICALS such as perms or bleaches or harsh
treatments such as BACK BRUSHING.
Answers:
BACK BRUSHING, TEN, TRANSLUCENT, HARSH CHEMICALS, SEVEN.
THE HAIR TEXTURE
IS DETERMINED BY THE AMOUNT OF CUTLCLE LAYERS
FINE
MEDIUM
COARSE
Very fine hair
Average hair
Very coarse hair
THE CORTEX
REAL HAIR
DRAWING
HAIR ELASTICITY
POLYPEPTIDE CHAIN
CORTIAL FIBRES
LAYERS OF THE CUTICLE
PHYSICAL DAMAGE
HAIR HAS BEEN SHEARED OFF
CORTEX RIPPED
THE START OF A SPLIT END
TASK 3
Look up elasticity test in the index page of
your text book
And complete the following sentence;
How, why and when do you carry out an
elasticity test?
TASK 4
(USE YOUR TEXT BOOKS TO HELP)
The cortex is made from many strands or fibres, which are twisted together.
These can stretch, and then return to their original length.
Hair is made of a protein called KERATIN.
Keratin itself is made of AMINO ACIDS, which
are found in long coiled chains
called POLYPEPTIDE chains.
Various links and bonds hold these chains together.
Temporary bonds are HYDROGEN bonds
and SALT links. These break and rejoin whenever the
hair is STRETCHED or DRIED into a new shape.
Answers:
HYDROGEN, KERATIN, POLYPEPTIDE, AMINO ACIDS, DRIED, SALT, STRETCHED.
TASK 4 continued
(USE YOUR TEXT BOOKS TO HELP)
Permanent bonds are called SULPHUR bonds;
these are very strong and can only be broken by using
PERMS or RELAXERS.
The cortex also contains colour PIGMENT.
These pigments are called MELANIN, which are
brown and black, and PHEOMELANIN, which
are YELLOW and RED. These can only be altered
by permanent TINT or BLEACHED. The medulla is not always present in hair
and does not have any real function
Answers:
MELANIN, BLEACHED, RED, RELAXERS, YELLOW, PERMS, TINT, PIGMENT,
SULPHUR, PHEOMELANIN.
TASK 5
IN GROUPS COMPLETE A LIST OF WHAT CAUSES DAMAGE TO THE HAIR
ENVIROMENTAL
PHYSICAL
CHEMICAL
REGENERATION OF THE HAIR
The regeneration of the hair is influenced by the following factors:
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Health
Diet
Age
Effects of disease
Hormone balance
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Heredity factors
Climate
Physical condition
Chemical affects
Non stress
TASK 5
Hair is grouped into the following types:
• Caucasian (European) - Loosely waved or straight hair.
• Negroid (African) - Tight, kinked, woolly, curled hair.
• Mongoloid (Asian) - Coarse, straight, lank hair.
PH SCALE
With the help of page 19 of
your text book write the
following onto the pH scale
below indicating where
they would sit;
• Bleach
• Tint
• Shampoo
• Water
• Hair & Scalp
ACID
NEUTRAL
Then complete the
following task
ALKALINE
Look on the packaging to see if you can find the pH value of
these products or use the universal indicator paper.
PRODUCT
PRE PERM SHAMPOO
COLLEGE SHAMPOO
SHAMPOO FROM HOME
COLLEGE CONDITIONER
4X4 VITAMIN
STYLING PRODUCT
HAIR SPRAY
FASHION FORM PERM
SOLUTION
NEUTRALISER
TINT
PEROXIDE
WHEN COLOUR MIXED
TINT REMOVER
BLEACH
WATER
VALUE pH
ACID
PH SCALE - TASK
ALKALINE