Main Difference
The main difference between semi-permanent hair color and demi-permanent hair color is that semi-permanent hair color is the color that fades away speedily, whereas demi-permanent hair color is long lasting.
Semi-Permanent Hair Color vs. Demi-Permanent Hair Color
There are different types of hair dyes available nowadays. These dyes are not equally created. You have to choose a dye on the basis of how the color looks, how your hair looks, and how long the color should last. Sometimes, we choose between semi-permanent hair color and demi-permanent hair color. Both these options are a healthy, gentle alternative for dyeing the hair because they are less damaging than permanent hair dye. So, semi-permanent hair dye and demi-permanent hair dye are ideal for those who want to change their hair color without potential damage or growing out. Semi-permanent hair colors are the colors that fade away speedily as compared to demi-permanent hair color. Although both are temporary semi-permanent hair color lasts up to 3 to 6 whereas demi-permanent hair color lasts 24 to 28 shampoos.
Comparison Chart
| Semi-Permanent Hair Color | Demi-Permanent Hair Color |
| A type of temporary hair color that fades away speedily is known as semi-permanent hair color. | A type of temporary hair color that fades away slowly is known as demi-permanent hair color. |
| Time Required to Remove | |
| Semi-Permanent hair color lasts up to 3 to 6 shampoo. | Demi-Permanent hair color lasts up to 24 to 28 shampoo. |
| Peroxides | |
| Peroxides are absent in Semi permanent hair color. | Peroxides are present in demi permanent hair color. |
| Ammonia and Developer | |
| Semi-Permanent hair color does not include ammonia and developer. | Demi-Permanent hair color is ammonia free, but a small volume of the developer is added in it. |
| Color Deposition | |
| The hair color does not absorb inside the hair in case of semi-permanent hair color. It just coats the hair. | The small amount of peroxide present in demi-permanent hair color opens the hair cuticle slightly so that color will be absorbed inside the hair. |
| Use | |
| Semi-permanent hair color is good for changing or enhancing tones, but not for changing colors. | Demi-permanent hair colors are better for darkening hair. |
| Damage | |
| Semi-permanent hair color is little damaging for hair because it just coats the hair. | Demi-permanent hair color is more damaging because it absorbed into the hair. |
| Covering the Grey | |
| Semi-permanent is acceptable for hair that is minimally gray or just starting to lose color. | Demi-permanent colors the gray better and for longer. |
What is Semi-Permanent Hair Color?
Semi-Permanent hair color is a type of temporary hair color that fades away speedily. This type of hair color is good for first-time dyers or for those who do not require a more drastic change. The semi-permanent dye is without ammonia and developer. That is why no color is deposited inside the hair shaft. But, the color only coats the hair, so it is also known as a “stain” or a “wash.” Semi-permanent hair color is good for changing or enhancing tones but not for changing colors. It generally washes out in three to six shampoos. This type of hair color is little damaging for hair because it just coats the hair and but not absorbed in it. Semi-permanent is acceptable for hair that is minimally gray or just starting to lose color. As it fades quickly, take proper steps to ensure that it lasts as long as possible. Use moisturizing conditioners and shampoos, avoid shampooing every day, cover your hair when going outside to shield from the sun, and avoid excess sweating.
What is Demi-Permanent Hair Color?
Demi-Permanent hair color is a type of temporary hair color that fades away slowly. It shows more obvious change. It is ammonia-free and mixed with a low-volume developer and has a small amount of peroxide, which opens the hair cuticle to absorb color inside the hair. It darkens the heir in a better way than semi-permanent hair color. Demi-permanent hair color typically lasts up to 24 to 28 shampoos. This type of hair color is more damaging because it absorbed into the cuticle of the hair. Demi-permanent colors the gray better and for longer. It also required the same precautions that are required for semi-permanent hair color to slow down the fading process.
Key Differences
Conclusion
From the above discussion, it is summarized that both semi and demi-permanent hair colors are the temporary hair colors but, semi-permanent hair color fades rapidly in 3 to 6 shampoos whereas demi-permanent hair color fades slowly in 24 to 28 shampoos.
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