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Definition: Semi-permanent hair color is defined as color that is deposit only and typically lasts 4-6 weeks depending on the hair's porosity and condition. Semi-permanent hair color usually has low or no ammonia and is a great options for clients that are concerned with the damaging effects of peroxide. Semi-permanent color will not completely cover grey but it can be used for blending it. Shop â¾.
Caution: If your hair is gray or white, temporary hair color is not temporary: It will leave a permanent stain on your hair. Semi-Permanent Hair Color: Semi-permanent hair color is made for darkening or adding depth to the hair, not for lightening. It coats the hair much like a rinse, but some types do contain small amounts of peroxide (not enough to lighten the hair). You'll often find an activator inside a home semi-permanent color box, which makes your color darker. This is a good option for adding richness to your existing hair color and will last about four to eight weeks. Be careful applying this color all over.