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
9.0 to 10.0
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.
You cannot turn a permanent hair colour into a semi permanent hair colour. Permanent colours are made of small colour molecules that need a developer to create the chemical reaction required for the colour molecules to penetrate the hair shaft and tint to the desired shade. True Semi permanents are pretty much topical with mainly large colour molecules. (which is why you see the shade while the product is still in its original packaging) They require no developer as they sit ON TOP of the hair shaft with fewer smaller colour molecules that penetrate the cuticle.
It doesn't have a permanent color, cause it changes........
If it isn't permanent colour, yes.