types of tests. skin test purpose of test to test for allergy to colour products
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Skin Test
MethodWipe area of skin behindthe ear with surgicalspirits. Apply smallamount of proposedmixture to cleansed
area.Allow to dry naturallyLeave for 48hrs DO NOT COVER
When to do the test
• 48 hours before the application of permanent or quasi colours. Test should be carried out in the following circumstances:
• for a client new to the salon • for a client new to colour• for a client who has not had a colour
treatment in previous 12 weeks• If a client changes to a different colour
product or shade
Potential Consequences Of Not Carrying Out The Test
BBC News | HEALTH| Hair dye allergy'led to tragedy‘Potential for client to take legal action ifhair if damage toscalp occurs
Elasticity Test
Expected ResultThe hair should
stretch andreturn to itsnormal lengthwithout breaking
Potential Consequences Of Not Carrying Out The Test
Damage to thehairPotential forclient to takelegal actionif damage tohair occurs
Potential Consequences Of Not Carrying Out The Test
Damage to thehairPotential forclient to takelegal actionif damage tohair occurs
Strand Test
When to do the test
During the colour orbleach developmentprocess and aftermanufacturer’sRecommendeddevelopment time
Potential Consequences Of Not Carrying Out The Test
The result may notmeet requirements. If damage to scalp orhair occurs, for theclient to take legalaction.
Incompatibility Test
MethodMix 1:20
ammoniumhydroxide and 6%H2O2 , place hair
cutting into mixtureand leave for up to30 minutes
Incompatibility Test Expected resultIf metalliccompounds arepresent the hair maychange colour, themixture may bubbleor fizz and heat maybe created
Potential Consequences Of Not Carrying Out The Test
Disintegration ofhair, change of haircolour, damage to
thehairIf damage to the hairoccurs, potential forthe client to takelegal action
Test YourselvesPractice Quiz and Challenge Game For One or Two Players
Interactive Card Games and Word Search
Interactive Card Games
Development Test Curl
MethodPartially unwind aRod and gently pushIt back on itself.Do this with aFew areas on thehead
Development Test Curl
When to do the test
During the permingdevelopmentprocess and aftermanufacturer’sRecommendeddevelopment time
Potential Consequences Of Not Carrying Out The Test
Damage to thehairIf damage to thehair occurs,potential for theclient to take legalaction
Pre-perm Test Curl
MethodWind 2 or 3 rods inthe hairApply perm solution
and leave to process for manufacturer’s development time,
check then neutralise
Pre-perm Test Curl
Expected ResultIf the curl is strongand hair is in goodcondition – carry onwith permIf the hair has beenleft in poor conditionDO NOT PERM