lighteners
lightener will lift both ___________ and ____________ types of hair
what is virgin and previously coloured hair
when using 20 volume and permanent colour how many levels of lift will you get on virgin hair
what is two
demi permanent hair colours are also known as
what are no lift hair colours
traditional semi permanent hair colours last for how many weeks, depending on the amount of shampooing
what is four to six weeks
these hair colours make only a physical change in the hair, they do not penetrate what layer of the hair shaft
what is the cuticle layer
lighteners are chemical compounds that lighten hair by dispersing and ___________, and decolourizing the hair pigment
what is dissolving
what type of hair can you use permanent colour and achieve lift and deposit at the same time
what is virgin hair
because these products are less ____________ they are able to deposit without lifting
what is alkaline
semi permanent hair colors care used straight from the tube and do not use what to be activated
what is hydrogen peroxide
because they do not penetrate the hair shaft, this product does not require what
what is a patch test
as soon as hydrogen peroxide is mixed int lightener it begins to release ___________________
oxygen
permanent hair colour will lift and deposit on virgin hair in a single process, why is this
permanent hair colour is more alkaline than demipermanent haircolour
a common way to describe a demi permanent hair colour service is what
what is a haircolour glaze
semi permanent hair colour contains some of the same dyes so therefore requires what before application
what is a patch test
how do you remove a true temporary hair colour from the hair
what is shampooing
when lightening hair from a level 5 to a ten you will see how many undertones exposed
what is five
permanent haircolours contain uncoloured dye precursors that can easily penetrate the hair shaft. why can they penetrate so easily
what is very small precursors
demi permanent hair colour can not lighten the hair it can ______________________
what is deepen or change the tone
a patch test is done how many hours before a semi permanent hair colour service is provided
what is 24 to 48 hours
what size of molecule is present in temporary hair colours
what is large molecules
oxidation occurs in what layer of the hair
what is the cortex
what are the dye precursors called in permanent hair colour
what are aniline derivatives
demo permanent hair colour is milder because it uses what as the active ingredient
what is a lower volume of developer
when would a semi permanent hair colour not wash out of the hair after several shampoos
when the hair if porous
name the types of hair colours that are temporary
what is rinses, mousses, mascaras, spray on colours, hair chalk