Semi-permanent coloring does not damage the hair
Unlike permanent colorings, semi-permanent color is ammonia-free and does not require oxidants (sometimes present in low concentration). It does not penetrate the cortex of the hair and does not damage its structure. The pigments, plant or not, create a film around the hair, attach themselves between the scales and form a protective sheath, without altering the natural base color and without modifying the natural pH.
It therefore does not affect the fiber and it is not very aggressive for the scalp and the hair, which makes it the ally of people with damaged hair or allergic to dyes. There are semi-perms with natural or classic ingredients.
Semi-permanent coloring covers (partially) white hair
Tone-on-tone color can cover between 50 and 70% of white hair, but not at all like a permanent color that recolors it from the inside out. Here, the pigments are placed on the hair in a natural and transparent way, so that the clear demarcation of the root effect during regrowth is avoided.
The semi-permanent color gradually fades
As it does not penetrate the core of the hair, this coloring gradually fades over the washings and lasts about 10 shampoos or six to eight weeks. It fades without leaving a root effect, so no need to touch up the regrowth every four to six weeks.
Semi-permanent hair color enhances color
This type of coloring is superimposed on the hair color. The result therefore varies depending on the base shade, the quality and the pH of the hair. It makes it possible to sublimate the natural color by accentuating reflections, to neutralize unsightly reflections, to revive the shine of the hair or to recover a color or a discoloration. It does not fade, but can darken two tones. You can also use it to test a color before taking the plunge.
How is it maintained?
To prevent the coloring from fading too quickly, the ideal is to wait 2 to 3 days before shampooing for the first time, to use a product without sulphate or clay to wash the hair gently and not ” Wash off “, with a mask (without coconut oil, because it absorbs pigments) in addition once a week.
>> What about temporary camps? There are also so-called temporary colorings, even more fleeting, which leave in two or three shampoos. They allow in particular to try trendy or very flashy colors (pink, blue, green, gold …).
Read also :
- Plant coloring in 10 questions
- 5 tips to make your hair color last
- What your hair says about your health
- What is a good mask for colored hair