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how and why do you need to carry out a strand test
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Skin tests in hairdressing are used to check that a client is not allergic or sensitive to the ingredients in a colouring product prior to treatment. A mixture of the colour with hydrogen peroxide is dabbed onto the clients inner elbow or behind the ear 24 - 48 hours prior to the colouring treatment. If the skin shows signs of redness, itching or swelling then the treatment should not be undertaken.
a porosity test is done while doing consultation with the client to show how much moisture the hair can absorb.
Hormones are carried in the blood
It is used to invaluate the shampoo into the hair and gives you a relaxation of some sort.
Electrochemistry is the test that can be carried to confirm the presence of sodium gas in electrolysis.
The profession of someone who works at a hairdressing job is a Hair Stylist. They have gone to hairdressing school to study the correct way to trim hair and what styles suit different face shapes.
It depends what test is being carried out
what is the role of connexions in hairdressing
Hairdressing has been around for thousands of years. Ancient writings indicated that hairdressing was in ancient Egypt and in Africa.
Short Answer is: It is skin in / and from / a test tube. What else ... would you need: Q'n.