Normal development time is 30mins
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.
Permanent settlements were developed for the first time.
Permanent settlements were developed for the first time.
black
yes but if you want to go red for instance you need to build it up
yes
The effects of quasi-permanent colour The quasi-permanent colour is mixed with a low-volume oxidant (1:2 ratio). Different sized colour molecules enter the cortex and are oxidized by the oxidant. Because the oxidant is mild, the colour molecules do not become very large and are gradually lost each time the hair is shampooed. The colour is designed to fade over a period of 12 weeks.
9.0 to 10.0
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.
It doesn't have a permanent color, cause it changes........
If it isn't permanent colour, yes.