How often can you use demi permanent hair color? What happens if you use it too often?

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  • Ideally, the demi-permanent hair color should be used every three weeks.
  • That frequency will depend on the base color of your hair and the color of the demi-permanent hair dye you applied.
  • Therefore, the less difference between your base color and the demi-permanent hair color, the more spaced out the touch-up can be.

 

colored with demi permanent dye

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The demi-permanent hair dye is much less aggressive to the hair than permanent hair dyes. It’s applied with a soft developer and doesn’t contain ammonia.

Now, just because it’s less aggressive than permanent hair dye, it doesn’t mean you can apply it every week.

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 You should space it as much as possible. For example, every three weeks. 

 

If you use demi-permanent hair color every three weeks, you won’t run the risk of drying out your hair, and you’ll avoid breakage at the ends.

How do you space out the use of demi-permanent hair color?

 

Don’t worry, I’ll tell you all about it later.

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 It’s also true that the demi-permanent hair color will last more or less according to the base color of your hair and the color you applied. 

 

Let’s take a look at some examples:

  • If your base hair is gray, and you apply a blonde demi-permanent hair dye, you’ll have to do strict touch-ups.
  • If your base hair is dark, and you apply a medium brown demi-permanent hair color, you can space out the touch-ups.
  • If your base hair color is dark, and you apply a light blonde demi-permanent hair color, you’ll need to touch it up more often.
  • If your base hair color is light, and you apply a light blonde demi-permanent hair color, the touch-up will be more spaced out.

 

 As you can see, the higher the contrast of your natural color with the hair dye color, the more frequent the touch-ups of the demi-permanent hair dye will have to be. 

Do you want to go deeper into this?

 

Then, stay with me because I’ll tell you:

  • How often to apply the demi-permanent hair dye.
  • How to extend the duration of the demi-permanent hair dye to space out the touch-up.

Read on!

 

How often to apply the demi-permanent hair dye

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The demi-permanent dye has to be touched-up every 3 to 4 weeks because it doesn’t contain ammonia and is applied with a soft volume developer.

Therefore,  its staying power is not as strong as that of permanent hair color. 

Permanent hair dye is touched up every 5 to 6 weeks. So, it lasts much longer but can also damage the hair more.

 

  • Demi-permanent hair dyes are suitable for women with damaged hair because it doesn’t dry the hair. Of course, washing will cause the pigments to fade quickly.

What will happen then? You’ll have to touch up the demi-permanent hair dye more often.

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  • On the other hand, you should also consider your natural hair color and the shade of demi-permanent hair color you choose. Why?

If your hair is gray and you apply dark demi-permanent hair color, you’ll have to touch it up more often because your gray hair will start to show in two weeks.

On the other hand, if your hair is gray and you apply a blonde demi-permanent hair dye, the gray hair will be concealed. Then, you can space the touch up more.

 

  • When you apply contrasting hair dyes, (2 opposite tones, such as black as a base and blonde hair dye) the touch-up should be more frequent because there’s too much difference.

Ideally,  to avoid having to touch up your demi-permanent hair color so often, you should apply a color that is no more than 2 numbers away from your base color. 

For example:

  • If your hair is light brown 5, you can apply a blonde 7.
  • If your hair is blonde 7, you can apply an extra light blonde 9
  • If your hair is dark brown 3, you can apply a light brown 5

 

This way, you’ll conceal the growth and you won’t have to touch up your demi-permanent hair color every 3 or 4 weeks.

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However, if your hair is gray, you should always go for the blonder shades.

For example:

  • If your hair is 20% gray, you can apply a dark blonde 6
  • If your hair is 50% gray, you can apply a light blonde 8
  • If your hair is 75% gray, you can apply a very light blonde 9
  • If your hair is 100% gray, you can apply an extra light platinum blonde 10.

This way, you can disguise your gray hair and space out the touch-ups even more.

 

Professional secrets for spacing out the touch-up of demi-permanent hair color

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The demi-permanent hair dye does not penetrate the hair because it doesn’t contain ammonia, so it does not last as long as the permanent dye.

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However, your beauty routine also plays a role in determining the duration of the hair dye.

 

 You’ll have to change some habits and the products you use to extend the color of your hair. 

If you follow these tips, you’ll be able to keep your color for more than 30 washes without changes.

 

Washing your hair

 

  • Always try to wash your hair with the coldest water you can tolerate. Hot water opens the pores of the hair, and hair dye pigments fade more easily.

 

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  • Please wash your hair at most three times a week. This way, the permanent hair color will last longer, and your hair won’t dry out.

 

Also, use sulfate-free shampoos. As they don’t contain corrosive chemicals, the color will last longer. Any suggestions?

  • Nexxus, sulfate-free color protection shampoo.
  • Organix, sulfate-free shampoo with Moroccan argan oil
  • Herbal Essences, color-protecting shampoo and conditioner with honey and vitamin B.

 

Hair styling

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Don’t overuse flat irons, curling irons, and blow-dryers. In case you have to use the dryer, do it at low temperature or apply a heat protectant so your hair will be hydrated and soft.

 

Don’t expose your hair to the sun and sea without adequate protection

Forget about spending several hours in the sun without sunscreen on your skin and hair.

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The sun has a lightening effect that can turn the ends of your hair a blonde shade in a few days. Therefore, every time you dip your hair in the sea, you should rinse it to remove the salt and iodine.

These two minerals are very corrosive to color and should be avoided. The same goes for chlorine used in swimming pools. Therefore, if you swim or practice swimming, use plastic caps and rinse your hair every time you get out of the water.

 

If you follow these tips, you can extend the touch-up of your permanent hair color up to 5 weeks and look perfect for longer.

 

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Conclusions

The demi-permanent hair dye is touched up every 3 to 4 weeks. However, if you keep the color from external factors, you can space the touch-up up to 5 weeks.

You should also choose a hair dye color that is no more than two shades lighter or darker than your base color. That’ll make the difference between your natural color and the growth much less noticeable.

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