The changing structure of the hair from wet to dry

Name the 3 hair layers of the basic hair structure

• Cuticle

  Cortex

  Medulla

• Canvas

  Bortex

  Medulla

• Sorbitle

  Cortex

  Medulla

What is the main bulk of the hair called?

• Cuticle

• Cortex

• Polypeptide chains

Answer explanation

The cortex contains pigment, texture, salt/hydrogen and disulphide bonds, this is the main bulk of the hair

What are the weak bonds of the hair called?

• Salt

  Hyrdogen

• Disiphuld

  hygroscopoic

  Salt

• Salt

  Pepper

  Ion

Answer explanation

There are three types of bonds salt and hydrogen these are weak bonds. The other is disulphide, this bond is strong when broken the hair is damaged

What bonds are affected during the styling process?

• Salt

  Hydrogen

• Disulphide

  Salt

• Polypepride

  Hygrogen

What does hygroscopic mean?

• The hair has the ability to absorb moisture from the atmosphere

• The hair cannot absorb moisture and can become dehydrated

• Under a microscope water will be evident

Answer explanation

Hygroscopic is anything that can absorb moisture, hair can absorb moisture

What does alpha Keratin mean

• The hairs natural state, the salt and hydrogen bonds are broken, the hair is wet

• The hairs unnatural state where the salt and hydrogen bonds are connected

• The hair unnatural state, the bonds are broken

Answer explanation

This is the hairs natural shape the bonds are broken at this stage

What does Beta keratin mean?

• The hairs unnatural state, the bonds are reconnected, the hair is in a new unnatural molded style

• The style has been made solid, the bonds are broken in this state

• The bonds are half way connected, the style is a bit limp

Answer explanation

This is when the hair has been moulded into a new hair shape and the bonds are reconnected

Is the hair straight or curly in Alpha keratin

• Depends on the classification of the hair

• Straight

• Curly

  Wavy

Answer explanation

When the hair is in its natural shape of Alpha keratin it will be either straight, wavy or curly depending on the clients natural hair type, this is called hair classification

Which is correct description of what happens during the styling process?

• When wet the hydrogen/salt bonds are broken, the hair is in its natural state, as the hair is dried the bonds reconnect, this will hold the style in place until it gets wet or enters a moist atmosphere.

• When wet the bonds are connected, as the hair is styled the bonds stay the same, the style will be firm

• When wet the bonds are broken, this allows us to style the hair into a curly shape however the style will drop quickly

Answer explanation

When styling the hair we wash, the hair becomes wet, this breaks the salt and hydrogen bonds returning the hair to Alpha keratin, this is the hairs natural state, as the hair is dried the bonds reconnect keeping the new remoulded style of Beta keratin, the hair style will stay like this until wet again

How much can the hair stretch when wet?

• Up to 50%

• Up to 20%

• Up to 30%

Answer explanation

When washed or damped down this causes the bonds to break called Alpha keratin allowing the hair to stretch up to to 50% of its length