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how long will demi-permanent hair color last and willl it wash out completely?
I have darkish auburn hair. (reddish brown/blonde). I'm thinking about dying my hair dark brown and i want to try it out with a demi color. How long with the color last? and will it wash out COMPLETELY?
personal or professional experience would be so helpful!
thanks!
semi and demi are the same thing...
Semi and Demi are not the same thing
Semi-permanent color is designed to deposit color onto the hair only and has no lightening effect. The formula includes an activator that develops the color and helps to raise the cuticle of the hair shaft so that the color can be deposited there. Semi-permanent color doesn't penetrate into the cortex of the hair, but it will usually last from six to eight weeks, gradually washing out with each shampoo.
Demi-permanent color is also a deposit-only color with no lightening effect. The difference between the Semi- and Demi-permanent colors is that with demi-permanent color the color molecules are smaller and therefore penetrate into the cortex of the hair, as well as being deposited on and in the cuticle. This makes demi-permanent color a better choice for covering gray hair. The color achieved also lasts longer, but will fade due to the formulation of smaller color molecules being able to come back through the cuticle with each shampoo.
