Essential 8 Exam Flashcards
What are the 3 layers of the skin.?
The epidermiss the dermis and the hypodermis
3 types of elongated cells create the cuticle
The epicuticle the exocuticle and the endocuticle
What keratin ‘chains are linked together and held in Centre of The cortex.by chemical bonds
Disulphide bonds,they canbe changed by perms and Brazilian blowdrys, hydrogen, and saline
Where is melanin produced?
Inside the matrix is the melanisation unit
What do tyrosine and tyrosinase produce?,
Eumelanin, granular pigment gives the hair depth
How many keratinocytes are there roughly?
30
What is tyrosine?
A amino acid
What is tyrosinase
enzyme
What creates pheomelanin and what does it do?
When cysteine is present it reacts with tyrosine and tyrosinase, and creates pheomelanin which gives warmth and lightness
Where is the melanocytes?
In the dermal papilla.
What are granular pigments made up of?
Blue red and yellow globular cells and dermis the hairs depth
What are diffuse pigments made from?( pheomelanin )
Pale yellow to bright red, these determine the warmth
Lighting types
Direct spotlights areyellow based, warm fluorescent blue based cools halogen lights dive a slight pink base
Where should you and analise the persons natural base
At the back of the head
What is porosity caused by?
Probity is caused by deformation of the cuticle scale in certain areas
What are the 4 causes of porosity
Salt/chlorinated water, electrical equipment, sun and wind, chemical products.
How to test for porosity?
Take a few strands of hair and slide fingers down the hair, down towards the roots, the rougher and more swollen the hair feels, the more porous itis
What is sensitivity?
It is internal damage to the hair, it is when the hair has been damaged to the keratin chains ‘
What are the causes to sensitivity?
Excessive chemical services or electrical damages, naturally weak hair, sun s
How do you fest for sensitivity
Take a single damp hair, holding it between two fingers with wrists together gently stretch
If the hair is sensitised what doula need to add?
Warmth