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www.leaf.tv/articles/demi-permanent-vs-semi-permanent-hair-color

Both demi-permanent and semi-permanent hair color dye can be applied at a salon or at home. The are two main differences between demi and semi-permanent hair color: the duration the color lasts and how deeply the dye penetrates the hair shaft.

www.esalon.com/support/category/3/learn-about-hair-color/39/permanent-vs-demi...

Demi-Permanent hair color deposits color pigment onto the hair cuticle without penetrating it. This means that demi-permanent color can darken your hair color, but the absence of ammonia makes it unable to lighten the hair. Since it does not make a permanent color change, the color fades gradually, lasting up to 24 washes.

www.madison-reed.com/blog/semi-demi-temporary-and-permanent-what-s-the-difference

The differences between semi, temporary, permanent and demi permanent hair color - and when and why you should use them. Demi-permanent hair color is a great option if you’re looking to extend time between salon visits or using an at-home permanent color.

www.hairfinder.com/tips/hair-coloring.htm

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.

www.uglyducklingcolor.com/content/54-permanent-demi-permanent-semi-permanent...

What is the Difference Between Permanent and Demi-Permanent hair color? Permanent hair color and demi-permanent hair color both belong to the class of hair color known as oxidative dyes. These dyes work through a combination of pigments, a developer, (otherwise known as an oxidizer) and an alkali base.

www.liveabout.com/what-is-semipermanent-hair-color-345975

The difference is demi-permanent color lasts 12-26 washes, depending on the formula. According to NYC stylist Eva Scrivo in her book "Eva Scrivo on Beauty," this color is good for covering up a few gray hairs, refreshing hair that has previously been colored, deepening the hair color, lightening it a shade or altering the tone of the hair.

www.quora.com/What-are-the-differences-between-semi-permanent-and-demi...

There are quite a few differences between semi and demi permanent hair color. The biggest difference is semi has no developer while demi will have a peroxide based developer. Because of this, semi’s only coat the hair shaft. The peroxide slightly ...

www.livestrong.com/article/69199-demi-permanent-vs.-semi-permanent

The most essential might relate to the type of hair dye you should use. Not all dyes are created equal, and the choice you make determines how your color looks, how your hair looks, and how long the color lasts. Understand the differences between semi-permanent and demi-permanent hair color before you try a new look.

www.epainassist.com/hair-care/demi-permanent-vs-semi-permanent-hair-color

Know what is demi-permanent and semi-permanent hair color. This article explains the difference between demi-permanent vs semi-permanent hair color based on its usage and application, hair color efficacy, hair color and damage, and hair color and after care.

difference.guru/difference-between-semi-permanent-and-demi-permanent-hair-color

Semi-permanent hair color simply coats the hair, thus it washes off easily. Demi-permanent hair color is absorbed by the hair and can stay after several washings and after shampooing. Semi-permanent hair color is recommended for light colored hair, while demi-permanent hair color gives better results for darker gray hair.