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take small section of hair and push your fingers up the hair shaft if you feel bumps your hair is poroise
to test the hair to see if its damaged and able to have the treatment done, if the hair stands up once it have been pulled back by finger and the thumb then the hair is porus.
yes they do not actually take the root it is not pulled it is cut, a hair test is a hair test . you can see actual hair test collection on you tube search Hair Collection for Drug Testing
Take a small section of hair from the back of the head, tie it together, mix up the colour you desire and put it in foil with your hair section. Check the colour in maybe 20 minutes.
You have to mix 2 ml of peroxide with 2ml of perm lotion. Put the hair in the mixture: if there is any heat, smell, smokeing or bubbleing do not carry on with any chemical processes such as perm or colour.
Porosity tests are carried out to assess the condition of the cuticle layer of the hair.
Learn how you can manage and take better care for your hair extension using these simple hair extension care tips.
a porosity test is done while doing consultation with the client to show how much moisture the hair can absorb.
take small section of hair and push your fingers up the hair shaft if you feel bumps your hair is poroise
when dyed colour may not take and damage hair more
to test the hair to see if its damaged and able to have the treatment done, if the hair stands up once it have been pulled back by finger and the thumb then the hair is porus.
The reason why a porosity test is important is because hair that is more porous will "suck up" color more quickly than less porous hair. This being said, if the hair is not evenly porous, some parts may be darker than others and vice versa. To test the porosity, simply examine the quality of the hair in your hand. If the ends are severely brittle and porous, you might want to suggest a haircut after the service. Or, to make the porosity more even, apply a developer first, leave on for five minutes (don't wash it out), and then mix the desired color with developer and apply evenly.
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The best time to check the hair's elasticity is when it is wet.
Test results, such as porosity and elasticity of the hair, can indicate how the hair will react to the coloring service. This information helps the hairstylist choose the right products and techniques to achieve the desired color without damaging the hair. Test results also help in predicting the longevity and vibrancy of the color.
test for hair strength, which is done by any service,is carried out. pull a hair between your fingers, does it stretch and spring back if the hair brakes easy the cortex is damaged so chemical processing will cause it to break
Porosity