starred Flashcards
when does the most processing take place?
within the first five to ten minutes, as soon as the solution penetrates the hair
how many disulfide bonds should break and rebuild in a properly processed perming wave?
50% of the disulfide bonds should break and rebuild.
coarse hair
usually requires more processing time and is usually more resistant to processing
medium hair
does not pose any problems when perming
fine hair
most fragile, easier to process and much more susceptible to damage
why should you never use conditioner before a chemical service
it seals the cuticle
what is the active ingredient in alkaline/cold wave
ammonium thioglycolate (ATG)
what is the active ingredient in exothermic wave
ammonium thioglycolate (ATG)
what is the active ingredient in true acid wave
glyceryl monothioglycolate (GMTG)
what is the active ingredient in acid-balanced wave
glyceryl monothioglycolate (GMTG)
what is the difference between endothermic and exothermic
endothermic requires a source of heat
exothermic produces its own heat
