make sure the natural hair isn't broken or has any damage in the skin before applying the hair colour.
Semi permanent colour will wash out in 6-8 weeks.
Permanent colour doesn't wear off. Your natural colour grows out. If you were grey before you dyed your hair then the roots will grow out grey. Colour doesn't make your hair turn grey.
Permanent hair colour contains hydrogen peroxide whereas semi doesn't. Permanent colour changes the colour inside the hair. Semi doesn't. Permanent colour is permanent whereas semi only last 6-8 washes.
black
yes but if you want to go red for instance you need to build it up
yes
I THOUGHT IT WAS A COLOUR ! I THOUGHT IT WAS A COLOUR !
painting- is applying a coat of liquid with added colour to a wall . varnishing- is applying a coat of liquid with no added colour to door, skirting board ext.
9.0 to 10.0
in the cortex
a strand test is carried out after applying colour to a hair. You remove the colour of a strand of the hair to check if you have the desired result (colour)
textile printing is the process of applying colour to fabric.