Consultation (2) hair tests

Why do we carry out tests on the hair before a service?

What is the chemical we do a skin test for when colouring hair?

(a)  

How long before a colour do we carry out a skin test

• Just before the colour

• allow 24 hrs before a colour

• allow 48 hrs before a colour

• they dont need one if they colour their hair all the time

why might a clients hair have a positive reaction to a incompatibility test

• home hair colour

• henna

• well water

• old plumbing

Porosity test checks what part of the hair

• cuticle

• cortex

• medulla

Porosity test is carried out by feeling along the hair from

• root to point

• point to root

what part of the hair does an elasticity test check

• medulla

• cortex

• cuticle

• all of the hair

what would you tell a client to do that has a poor test result for a elasticity test

(a)  

when do we carry out a strand test

• before a colour

• after a colour

• during a colouring service