Unit 203 - WK 6

• Hairdressing
• Higher Education (non-degree)

Expectations- Classroom Rules

• No entering the classroom without a tutor 
• No food or drinks  when entering the classroom- Only water in a clear bottle
• Log onto a Chromebook
• Complete 'Do Now' task
•  Participate fully in your session
• No Hands up- Questions- No opt out 
• NO use of mobile phones- unless instructed to by tutor
• Toilet breaks not permitted in the first 30 minutes or the last 15 minutes of your session 
• Learning Review booklets/ Knowledge organisers 
• Remember to put Chromebooks at the end of session and remember to log out and put back on charge. 

Do Now Task 

Complete the worksheet relating to 

classifications and characteristics.

201 and 202 exam

Wednesday 15th October at 12.30pm.

Revision tools:

Notebook LM / textbook / Google classroom

I feel confident about my exams.

Absolutely, I am well-prepared.

Somewhat confident, need more revision.

Not confident, feeling anxious.

Completely unprepared, stressed about exams.

Lesson objectives:

• Recall the difference between a 'Characteristic' and 'Classification'
• List the different stages of the hair growth cycle.
• Identify the functions of the skin.
• Analyze the cross section of the skin and recreate this using the tools and equipment provided.

Describe the difference between 'Classification' and Characteristics'

Hair classification

T1 - Straight

T2 - Wavy

T3 - Curly

T4 - Very curly

List all the characteristics we discussed last week.

Hair Characteristics 

Hair Density 

Hair Texture 

Hair Growth Patterns 

Elasticity 

Porosity 

Hair Condition 

Hair covers our whole body

True

False

False

Hair covers most of our body except, the palms of our hands and soles of our feet.

There are two types of hair found all over our body

Vellus hair

Terminal hair

Vellus hair

Fine, downy hair which covers the body. 

It has no colour pigment.

Terminal hair

• Darker and thicker hair
• Has a colour pigment
• This is the hair found on the head.

Group task - Research each stage of the hair growth cycle. Find out how long they last for and what the main purpose is for them.

Anagen - Active growth stage

• Nourishment via blood supply
• Around 80% of hair is in this stage at any one time.
• Lasts between 2-7 years
• This determines how long your hair will grow by the length of your anagen phase.

Catagen - The changing stage

• Hair growth starts to slow, then stop
  
• The follicle starts to shrink and detaches from the dermal papilla
  
• This phase is generally 2 weeks long.
  

Telogen - The tired stage

• Resting phase of the hair growth cycle
  
• Around 15% of hair is in the telogen phase at any one time
  
• Lasts for 10-12 weeks
  
• Hair is removed via brushing and combing.
  

To help you remember....

What percentage of hair is in Telogen phase?

1. 10% of hair
2. 50% of hair
3. Around 15% of hair
4. 80% of hair

What is the Anagen phase?

1. Lasts for 10-12 weeks
2. Resting phase of hair growth
3. Active growth stage of hair
4. Hair starts to slow down

How long does the Catagen phase last?

1. 2-7 years
2. 10-12 weeks
3. 3 months
4. Generally lasts 2 weeks

What type of hair is Vellus hair?

1. Fine, downy hair covering the body
2. Has a colour pigment
3. Hair found on the head
4. Darker and thicker hair

Function of the skin

S

H
A
P
E
S

6 main Functions of the skin

- Sensation

- Heat Regulation

- Absorption

- Protection

- Excretion

- Secretion

Sensation
Heat Regulation
Absorption
Protection
Excretion
Secretion

The skin helps us to identify heat, touch and pain

The skin controls the body's temperature

Sweat and sebum are secreted onto the skin

Toxins and waste are excreted through the sweat glands

The skin protects the rest of the body from all weather elements.

The skin absorbs UV rays from the sun

Layers of the skin

Task -

Find out 2 facts about each layer of the skin

The Epidermis

• The outer layer of the skin
• It protects us from bacteria and temperature changes.
• It is waterproof
• This is the layer where the colour of your skin in determined
• The Epidermis has no blood supply
• It replaces itself every 28-30 days by shedding.
• Around 90% of your house dust is made up of the epidermis layer which you had shed.

The dermis

• Attaches the epidermis to the subcutaneous layer.
• It passes nutrients between the two layers
• It provides the skin with strength and elasticity
• It contains most of the living structure of the skin. 

The Subcutaneous layer

• Also known as the Hypodermis layer.
• Is the fatty layer attached to the dermis.
• Its function is to keep us warm and to provide nutrients via the blood supply.
• Nerves, sweat glands, sebaceous glands and hair all travel through the subcutaneous layer to the dermis.

Cross section of the skin

Cross section of the skin

Hair bulb - The bottom of the hair

Hair follicle - This is where the hair grows from. 

Hair root and shaft - The root is the hair below the skin. The hair which you can see is called the hair shaft.

SEBACEOUS GLANDS

Sebaceous glands produce the natural oil called sebum which protects and conditions the hair. The average hair follicle contains up to 3 glands. Overactive sebaceous glands, more than 3, can cause excessively oily hair.

SWEAT GLANDS

Sweat glands travel from the subcutaneous layer, through the dermis and up to the epidermis. They contain water which is released as perspiration through sweat pores to cool us down when we are hot.

NERVES

Nerves travel through the subcutaneous layer, into the dermis and attach to the lower layers of the epidermis. Nerves are also attached to the hair follicle, causing discomfort if the hair is pulled.

ARRECTOR PILI MUSCLE

This muscle is attached to the hair follicle and the epidermis. We we are cold or scared the muscle contracts and causes the hair to lift. This traps a layer of warm air between the hairs and protects from the cold.

DERMAL PAPILLA

This nourishes the hair follicle and supplies food and oxygen to the hair and skin from blood cells via capillaries, arteries and veins.

THE MATRIX

The matrix is wrapped around  the dermal papilla, forms the new hair bulb by producing cells called melanocytes. These are made from keratin and are the fastest growing cells in the body.

Hair shaft

Epidermis

Follicle

Dermis

Sebaceous gland

Dermal papilla

Blood capillaries

Arrector Pilli muscle

Sweat gland

What happens to arrector pili muscles?

1. Lift hair
2. Contract when cold
3. Relax when warm
4. Produce sweat

What do sebaceous glands produce?

1. Natural oil
2. Sweat
3. Sebum
4. Keratin

What is the subcutaneous layer also known as?

1. Epidermis
2. Hypodermis
3. Dermis

What does the dermis provide to the skin?

1. Elasticity
2. Waterproof barrier
3. Skin colour
4. Strength

What is the function of the epidermis?

1. Determines skin colour
2. Protects from bacteria
3. Provides nutrients to dermis
4. Contains blood supply

Write down 3 things you learned in this lesson.

Have students enter three things they learned in this lesson. With this they can indicate their own learning efficiency of this lesson.

Write down 2 things you want to know more about.

Here, students enter two things they would like to know more about. This not only increases involvement, but also gives them more ownership.