| A | B |
|---|
| the hair breaks or remains stretched | do not proceed with any colouring or bleaching service. advise penetrating conditioning or restructuranttreatments |
| hair returns to normal length | proceed with colouring or bleaching service |
| hair feels rough | carry out test cutting to check for even colour result,apply a pre-colour conditioner to level out porosity, advise series of conditioning treatments before any colour application |
| hair feels smooth | proceed with colouring or bleaching |
| no change to hair or liquid | proceed with colouring or bleaching service |
| slight increase in temperature of liquid | do not proceed with colouring or bleaching |
| hair changes colour | do not proceed with colouring or bleaching |
| liquid bubbles or fizzes | do not proceed with colouring or bleaching |
| positive reaction | do not proceed with colouring or bleaching |
| negative reaction | proceed with colour |
| hair colour is the required result | remove colouring products |
| hair colour is not the required result | leave colouring product to develop further until required result is achieved |
