ºÝºÝߣ

ºÝºÝߣShare a Scribd company logo

1.tests and testing for colouring hair

?Download as PPTX, PDF?
?
I
Isabella Morrison

This document discusses various tests that are performed prior to and during hair coloring services. It describes skin tests that are done to check for allergic reactions to hair products. Elasticity, porosity, and incompatibility tests are explained which check the hair's strength, ability to absorb moisture, and compatibility with previous treatments. The document also covers test cuttings which involve applying color to small sections of hair to ensure the desired results will be achieved before proceeding with the full service. Strand tests check lightening and toning during the coloring process. Proper testing is important for safety, achieving good results, and avoiding legal liability.

1 of 20
Downloaded 176 times
Tests and Testing ? Skin Test ? Elasticity Test ? Porosity Test ? Strand Test ? Incompatibility Test ? Test Cutting
SKIN TESTING ?THERE ARE 2 REASONS WHY WE SKIN TEST 1. to get a result ¨C Para content in tint 2 .as a duty to care There are 2 types of reactions 1. Allergic 2. Irritant
Irritant ? Client may be sensitive to an ingredient or the product you are applying ? They can also have an irritant reaction to the smell of the product ? This is an external reaction ? It is confined to the area product is applied to
Allergic reaction ? It is only as a formality we check for an allergic reaction ? Allergic reaction can occur at anytime ? Takes up to 24-48 hours to occur ? This is a severe reaction ? The immune system starts to fight ? Antibodies change shape and swell
Allergic reaction ? Blisters on the skin taking several weeks to heal ? Anaphylactic shock- severest reaction DEATH
Allergic reaction to hair colour
Allergic reaction to hair colour
Allergic reaction
Allergic reaction
How do we skin test ? Each company have their own way of testing ? Always follow manufacturers guidelines ? Wella-Mix a small amount of colour with peroxide and place behind ear with cotton bud ? Inform client that it must stay on for the next 24-48 hrs and of the type of reaction that may occur if there is an allergy
Symptoms ? Hot spots ? Heat ? Stinging ? This is due to blood capillaries been aggravated in the dermis ? If this type of reactions occur you must remove the product immediately ? By not skin testing we are open to being sued and permanent damage to your business
Elasticity test ? Purpose is to check the hairs internal strength ? Hair in good condition can hold a 100gms in weight ? Hair in poor condition can hold only 30gms in weight ? Hair which is in poor condition will not hold colour well as there is to much space in the cortex ? Hair in poor conditioned is known as sensitised hair
Elasticity test ? To perform an elasticity test ? Take a few strands of hair and stretch between fingers ? Hair in good condition will stretch and return ? Hair in poor condition will not return
Porosity test ? 2 types of porous hair ? Naturally porous hair ? Chemically /physically porous ? Purpose of the test is to check the hairs ability to absorb moisture in varying degrees ? Condition of the cuticle- EXTERNAL DAMAGE ? If the hair is externally damaged the effect is on the outside ? Cuticle scales could be broken or missing
Incompatibility test ? We are looking for a reaction due to metallic salts being present in the hair ? Compound henna, some colour sticks, sun in ? These products can contain metallic salts which can have an adverse reaction to professional products
Incompatibility Test ? If no test was carried you could jeopardise the condition of the hair ? Breakage or complete disintegration ? If client has used home colour ALWAYS carry out an incompatibility test ? To test- take cuttings of hair from various areas of the head ? Place in an non metallic bowl with 20ml of 20vol liquid + 1ml ammonia solution
Incompatibility ? Leave for 3-5 mins ? Look for signs of bubbling attracting along the hair shaft ? Fizzing , heat, discolouration of hair, disintegration of hair ? If any of these reactions occur never proceed with colour
Colour Test or Test Cutting ? Test cutting ¨C done prior to colouring to check if colour result will be even or will be achievable ? Will the hair tolerate the service ? To perform the test apply your chosen colour to various cuttings from round the head (discreet areas) ? Develop for full development time ? Rinse, dry and check
Colour Test / Test Cutting ? Negative Result ? When the desired colour is not achieved or unsuitable for client ? DO NOT PROCEED WITH COLOUR SERVICE ? Positive Result ? When the desired colour has been achieved and is suitable for the client ? PROCEED WITH COLOUR SERVICE
Strand test ? This test is performed during the colouring process ? Ideally to check the lightening on bleaching and tones when using toner ? Remove a piece of colour using damp cotton wool ? If colour achieved rinse and remove colour ? If colour not achieved massage product back into area removed from and further develop

More Related Content

1.tests and testing for colouring hair

  • 1. Tests and Testing ? Skin Test ? Elasticity Test ? Porosity Test ? Strand Test ? Incompatibility Test ? Test Cutting
  • 2. SKIN TESTING ?THERE ARE 2 REASONS WHY WE SKIN TEST 1. to get a result ¨C Para content in tint 2 .as a duty to care There are 2 types of reactions 1. Allergic 2. Irritant
  • 3. Irritant ? Client may be sensitive to an ingredient or the product you are applying ? They can also have an irritant reaction to the smell of the product ? This is an external reaction ? It is confined to the area product is applied to
  • 4. Allergic reaction ? It is only as a formality we check for an allergic reaction ? Allergic reaction can occur at anytime ? Takes up to 24-48 hours to occur ? This is a severe reaction ? The immune system starts to fight ? Antibodies change shape and swell
  • 5. Allergic reaction ? Blisters on the skin taking several weeks to heal ? Anaphylactic shock- severest reaction DEATH
  • 6. Allergic reaction to hair colour
  • 7. Allergic reaction to hair colour
  • 10. How do we skin test ? Each company have their own way of testing ? Always follow manufacturers guidelines ? Wella-Mix a small amount of colour with peroxide and place behind ear with cotton bud ? Inform client that it must stay on for the next 24-48 hrs and of the type of reaction that may occur if there is an allergy
  • 11. Symptoms ? Hot spots ? Heat ? Stinging ? This is due to blood capillaries been aggravated in the dermis ? If this type of reactions occur you must remove the product immediately ? By not skin testing we are open to being sued and permanent damage to your business
  • 12. Elasticity test ? Purpose is to check the hairs internal strength ? Hair in good condition can hold a 100gms in weight ? Hair in poor condition can hold only 30gms in weight ? Hair which is in poor condition will not hold colour well as there is to much space in the cortex ? Hair in poor conditioned is known as sensitised hair
  • 13. Elasticity test ? To perform an elasticity test ? Take a few strands of hair and stretch between fingers ? Hair in good condition will stretch and return ? Hair in poor condition will not return
  • 14. Porosity test ? 2 types of porous hair ? Naturally porous hair ? Chemically /physically porous ? Purpose of the test is to check the hairs ability to absorb moisture in varying degrees ? Condition of the cuticle- EXTERNAL DAMAGE ? If the hair is externally damaged the effect is on the outside ? Cuticle scales could be broken or missing
  • 15. Incompatibility test ? We are looking for a reaction due to metallic salts being present in the hair ? Compound henna, some colour sticks, sun in ? These products can contain metallic salts which can have an adverse reaction to professional products
  • 16. Incompatibility Test ? If no test was carried you could jeopardise the condition of the hair ? Breakage or complete disintegration ? If client has used home colour ALWAYS carry out an incompatibility test ? To test- take cuttings of hair from various areas of the head ? Place in an non metallic bowl with 20ml of 20vol liquid + 1ml ammonia solution
  • 17. Incompatibility ? Leave for 3-5 mins ? Look for signs of bubbling attracting along the hair shaft ? Fizzing , heat, discolouration of hair, disintegration of hair ? If any of these reactions occur never proceed with colour
  • 18. Colour Test or Test Cutting ? Test cutting ¨C done prior to colouring to check if colour result will be even or will be achievable ? Will the hair tolerate the service ? To perform the test apply your chosen colour to various cuttings from round the head (discreet areas) ? Develop for full development time ? Rinse, dry and check
  • 19. Colour Test / Test Cutting ? Negative Result ? When the desired colour is not achieved or unsuitable for client ? DO NOT PROCEED WITH COLOUR SERVICE ? Positive Result ? When the desired colour has been achieved and is suitable for the client ? PROCEED WITH COLOUR SERVICE
  • 20. Strand test ? This test is performed during the colouring process ? Ideally to check the lightening on bleaching and tones when using toner ? Remove a piece of colour using damp cotton wool ? If colour achieved rinse and remove colour ? If colour not achieved massage product back into area removed from and further develop