Using Leftover Hair Dye?

Category Coloring
Once the color and activator are mixed they must be used quickly. If you don't need all of the product at one time, as you are touching up or have short hair, you may be able to retain some of each product for later use. This is a page about using leftover hair dye.
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Questions

Ask a QuestionHere are the questions asked by community members. Read on to see the answers provided by the ThriftyFun community or ask a new question.

June 4, 2017

Can I re-use my Splat hair color that's been opened for a couple months now?

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January 19, 2017

I have kept unmixed leftover hair dye in a small container for four weeks and everything went well. This time, I accidently left it out on my dresser and the light was on. The top portion of the dye turned dark on the top.
My question: is it still good to use?

Answers

January 19, 20171 found this helpful

The original container for these dyes is usually a dark material. If your container was dark, you can keep it. If it was clear, I would discard it. The fact that the top portion of the dye turned color is an indication of light exposure.

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January 19, 20171 found this helpful

You could remove the top portion that turned dark and see if the rest of it is good.

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The best way to tell, of course, would be to test it on something that you didn't care about - I suppose if you didn't mind cutting off an inch or so off your hair, you could test it

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January 19, 20170 found this helpful

I am sorry but I just do not understand why you would want to take a chance on damaging your hair over this amount of money.
If there is even the slightest chance that it would not "react" the way it was designed then it would be best to discard it.

Please - Try reading all of the cries for help where people have made mistakes with even "safe" hair dye before you decide to use this mixture.

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January 19, 20170 found this helpful

I just looked at the directions on a box of mine. It clearly states to discard any remaining. My husband worked for a chemical company for over 30 years.

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He read the ingredients and said it is dangerous to keep around after it is mixed and it changes chemically after long exposures to air. Dump it out.

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January 21, 20170 found this helpful

You can save dye that has not been mixed with developer. I mix two different colors, so I always have some leftover. Once you mix with the developer, it must be thrown away. The way I read the question, the unmixed dye changed color, so that's why I advised her to throw it away. Hair dye has a shelf life of about a year. I got this information from the hairdresser who cuts my hair. She was kind enough to help me out with dying tips so I can do that at home.

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July 14, 2019

Can I use only a little amount of and how do I preserve and store the remaining dye for future use?

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July 14, 20190 found this helpful
Best Answer

It is my understanding that any dye that has to be mixed unused/leftovers should be discarded.

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I realize it is expensive and having to discard a lot more than you use, seems very wasteful. Always read the label with products like this as when using chemicals it is very important to follow directions exactly as stated.

Perhaps you could use a semi-permanent dye that does not require mixing?
Check directions on container but I believe you can store unused portion in dark well sealed container (room temperature) for several weeks.
This is not a permanent dye so it will fade faster but you can easily reapply when necessary.

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February 25, 2019

Can you use the same hair dye from the previous day?

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February 25, 20190 found this helpful
Best Answer

Hair dye, unmixed, has a shelf life of a year. Once you mix it with developer, you must throw away the mixture. You cannot even use it one day later.

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I color my hair and have a lot of solution left over, as I have short hair. Is there anyway I can use this bottle again when I need to dye my hair again? Thank you.

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By flower51

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July 13, 20121 found this helpful

I have short hair as well. I just mix 1/2 the solutions and use either another bottle or a glass cup and a hair color brush. Works great for me and I always get 2 applications per box. Just be sure to measure right.

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July 14, 20120 found this helpful

Sure, you'll be fine.

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July 14, 20122 found this helpful

Hi Flower
I too have short hair and I have used 1/2 the solutions to color my hair for years. I am not "dying" my hair but "bleaching" it as I use blonde shades. The creme developer and the permanent hair color in the kit are both 2 oz.'s so I measure out 1 oz.

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(2 Tablespoons - use plastic , not metal measuring spoon) of each and mix together and get 2 uses out of each kit. As I have done this several years I kept prior application bottle to mix and apply my "saving" mixture. Happy Good Hair Days!
stormy10000 in Ca.

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July 14, 20120 found this helpful

You must do this the way the other posters have suggested. You can not save the solution after it is mixed together.

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July 7, 20160 found this helpful

what do i do with left over dye in tube were do i throw it away

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August 2, 20160 found this helpful

I was wondering the same thing. My hair dye I bought over the counter says it may bursts. I have a quarter of it left and I was wondering, do I just through it in the trash? What if it bursts in my bathroom trash can? What a mess that would be. Just so I know for next time. I read ALL the instructions and never came across exactly what to do with any left overs. Thanks in advance!

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April 8, 2017

I thought I needed two bottles of Loreal casting creme. I have already mixed the developer and the creme though I have not used the other bottle. Since I already mixed it can it still be used in the future? Please advise.

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February 28, 2020

My tube of hair color is enough for 2 applications. It has a small hole in it. Is it safe to use the rest?

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April 2, 2015

Can I keep hair coloring if I only use part of the bottles that you mix together. I have short hair and don't use all of the product. And I was wondering if I don't mix all the product, can I use it later? And if so how long can I keep it?

By Esther

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April 3, 20150 found this helpful

I have done it by not mixing it all and saving and it was fine.

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April 3, 20151 found this helpful

The product that I use says that you can do that, as long as you don't mix the products together. Once you mix them, you have to use them up or toss them. Read the package insert, and it will likely give you details.

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May 4, 20150 found this helpful

My hair is short, I do not use all my colour mix at one time, I keep half back that is not mixed. I also do this with my permanents, enjoy saving a little money.
Anne

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May 4, 20153 found this helpful

Yes, you can keep unused permanent hair color as long as it has not been mixed with a developer, such as peroxide. How long you can keep it and get satisfactory results, varies. Darker colours tend to keep longer than lighter colours. Both leftover color and developer should be tightly sealed and kept in a cool dark place. A refrigerator is best.

To insure a good colour 'take' and a good colour match to the already coloured hair, I would suggest you use the leftover colour within four to six weeks.

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September 9, 20160 found this helpful

How long can i keep my hair dye as long as i dont mix it all up for???

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Can I use my permanent hair dye after 3 weeks in the fridge?

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February 4, 2019

Last night I dyed my hair and I missed a spot. My hair is short so I still have a lot of dye left. Is it okay to use the next day (it's Feria in deepest violet)?

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February 25, 2019

How do I divide a tube of L'oreal hair dye evenly in half so I can use it twice? I only need to use half of the ingredients for each hair dye using L'Oreal Excellence. The coloring creme used to be in a dark bottle that was easy to divide in half. Now it is in a tube so I cannot tell if I have squeezed out half or more or less. Each tube says it holds 1.86 fluid ounces. How can I divide the contents so that I use half and save the other half for the next time.

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October 29, 2018

I have bought Loreal's Majirel hair color. When I opened the box, the seal of the tube was missing and when I squeezed it, the hair color that came out was of green colour. Is this colour useable or should I throw it away?

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Why do I have more hair color than the chemical when I use a partial bottle? It clearly states ie 30 ml of both bottle contents?

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October 7, 2018

I want to know if I can use semi permanent hair dye 2 days after opening?

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July 12, 2017

I did a transformers test on my hair and left the bottle out over night. Is it still OK to use, will it be as effective?

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July 18, 2017

Can I use the Ion hair dye from the tubes after opening it?

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August 9, 2019

What, other then the original bottle, can I keep unused unmixed developer in to save it for another time?

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July 22, 2019

I have hair color and peroxide mixed as leftovers. Can I put them in fridge to reuse 6-8 weeks later? Thanks.

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April 16, 2019

I only dye my roots to cover up my gray with black dye. I had a bunch left over and put it in the refrigerator. Is it still safe to use on my roots? It's been stored for about a month.

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