L2 HMMU Hair Structure info

From the outside in: what are the three main parts of the hair structure?

• Anagen, Catagen & Telogen

• Cortex, Cuticle & Medulla

• Cuticle, Catagen & Medulla

• Cuticle, Cortex & Medulla

What is the principle purpose of the cuticle layers?

• Lubrication

• Polypeptide chains

• Protein

• Protection

What part of the hair structure can be described as the 'main body' of the hair?

• Cuticle

• Cortex

• Catagen

• Medulle

What can be found in the cortex?

Select multiple.

• Colour pigments

• Hydrogen bonds

• Disulphide bonds

• Polypeptide chains

What is the name of the temporary bonds that allow the hair to temporarily change shape?

• Hydrogen bonds

• Disulphide bonds

• Salt links

• Polypeptide chains

What is a porosity test used to assess?

• The internal strength of the hair

• For incompatible products

• The outcome of a chosen colour

• The condition of the outside layers

What can cause physical damage to the hair?

Select multiple.

• Towel drying

• Pollution

• Excessive brushing & combing

• Colour & bleach

Using a hairdryer incorrectly can cause...?

• Heat damage

• Chemical damage

• Physical damage

• Environmental damage

Colour fade due to sun exposure is an example of...

• Heat damage

• Chemical damage

• Environmental damage

Hydrogen bonds are easily broken by...

• Water

• Scalp treatment

• Styling mousse

• Conditioner