Principles of Hair Shaft Damage

Which of the following is a common cause of hair shaft damage?

Which of the following can cause hair shaft damage?

Which layer of the hair shaft is responsible for protecting the hair?

What can exposure to heat

Ideal pH of the hair should be ____?

Dyed hair is ____?

How can chemical treatments cause hair shaft damage?

What is one symptom of hair shaft damage?

How can physical damage cause hair shaft damage?

How can you prevent hair shaft damage from physical damage?

How can you prevent hair shaft damage from environmental factors?

Which of the following is a cause of heat damage to the hair shaft?

What can chemical treatments like colouring do to the hair shaft?

Which of the following is an example of physical damage to the hair shaft?

What are the layers that make up the hair shaft?

The features of relaxed hair include? 

What is hair shaft damage?

Cuticles are meant to be____?

The acidity of the ideal hair structure falls on the pH of ___ and __?

Relaxers raises the alkalinity of hair to between ___ and ___?