Every week
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.
yes
A semi permanent colour is a colour that lasts 6-8 weeks. It lies just under the cuticle of the hair and this is why it washes out. (It doesn't enter into the hair or affect the internal structure of the hair).
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.
Semi permanent colour will wash out in 6-8 weeks.
i had my hair dyed semi permanent on the first of 1st of September and my hair has kept the colour well till now.After a while why did you want to wash it out ?
It is colour that last approximately 24-28 shampoos.
Every brand of hair colour has it's semi permanents or permanents. If it says on the box that it can cover grey then you know it is permanent.
Yes, but only use Revlon brand.
A good drugstore brand of semi permanant dye is Natural Instincts by Clairol.
make sure the natural hair isn't broken or has any damage in the skin before applying the hair colour.
Not if you use a permanent dye. If you do your hair will grow out and you will see the original colour. Use semi permanent dyes if you want it to wash out.