Using Left Over Unmixed Hair Dye

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.

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My question: is it still good to use?

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January 19, 20170 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.

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 27, 20170 found this helpful

A strand test is always best, but she doesn't need to cut the hair.

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January 27, 20190 found this helpful

Hi Jean, we should also read and ask about this product too which using the brand. You can contact the brand support team about that.

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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.

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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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February 23, 20170 found this helpful

I am very grateful that you brought up the point of taking the risk of damaging my hair. There is no amount of money to be say if that is worth the risk of damaging my hair.

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August 2, 20170 found this helpful

Good to see someone with sense out there,why anyone would risk the condition of their have to save a small amount of money is beyond me.They want to see what being on chemo is like and then they will learn to cherish their hair.

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Anonymous
January 9, 20191 found this helpful

It's more than just saving money. It's the convenience as well. No one wants to damage their hair, but there's a big gulf between "damage" and

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dye not working as well. I didn't ask the original question, but my search turned up these answers and this one was presumptive and snarky.

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January 15, 20190 found this helpful

Splat dye doesn't contain ammonia or other chemicals. You can actually leave the color on overnight, which i have before. (Most other permanent dyes)Other dyes mixed with developers, especially that contain ammonia or lightners no. But splat had no chemicals like that. You can pt it in ur shampoo and conditioner if u like. I've also heard(don't know) that u can put regular dyes in ur conditions.

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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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January 22, 20170 found this helpful

I'm sure when Judy's hairdresser told her color had a year shelf life, she was talking about unopened color, though some of the darkest colors, after opening, will probably keep well (under ideal conditions) for 6 months.

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As for the shelf life of unopened color...I have a near full tank of Roux fanci-tone #11 blue jet. The unused contents of the tank have never come in contact with air, so they qualify as 'unopened'. I recently dispensed a few drops to test. The color had all the potency it had when it was purchased. It was purchased 50 years, ago.

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January 9, 20180 found this helpful

If you know anything about business and marketing, you should know that companies tell you not to re use or to dump out so that you end up buying more. Just an FYI

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February 5, 20180 found this helpful

Only if it is Mixed not if you keep it seperate. My fiancée also works with colors & went to school to be a chemist.

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March 11, 20180 found this helpful

They only tell you to throw it out so that you end up buying more

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May 13, 20180 found this helpful

Hi: I think your hairdresser misinformed you. Unopened hair dye that is stored in a dark, cool place has an almost unlimited shelf life.

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Hairdressers are invested in telling you that a) you cannot dye your own hair b) boxed dye is inferior .. boxed dye is simply a combination of the dye, the developer, and conditioner. You can buy them separately at a beauty supply store ... really the same thing.

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Anonymous
June 4, 20180 found this helpful

It's referring to any unused portion which you've mixed. Separate portions are fine as long as thry haven't been mixed. Lol

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January 15, 20190 found this helpful

KEYWORD BEING: TO AIR

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January 21, 20170 found this helpful

If only just the very top portion has darkened, say a tenth of the amount in the bottle, the color should still have most of its potency, and should give the same results. The darkening is caused by oxidation. The top layer of color is exposed to the air in the bottle.

Use of this leftover color is safe (providing it hasn't been in contact with any developer), and again, should give the same results. In the salons where custom colors are mixed, there are thousands of half full bottles of color returned to the shelf every day. These may be used a month later on the same customer with the same results.

While this is common practice. It has its limits. A good colorist keeps strict account of his/her color inventory, knowing which leftover colors will produce results identical to the original, and which ones should be discarded.

If you keep your leftover color in a cool, dark place and tightly capped, it should be OK a month later. I would not advise keeping it longer. You should know that the lighter the shade of color, the quicker it will deteriorate. Also, if the color comes in a plastic bottle, you can squeeze a good amount of the air from the bottle before returning the cap. This will help prolong the shelf life.

At color shows, I have seen professional colorists from Roux and Clairol set aside a half full bottle of color for use some time later. When they opened the bottle, they stuck the inner seal to the outside of the bottle. Before resealing the bottle, they replaced the inner seal. They said this would help keep the potency of the color while on the shelf.

I agree with Judy. I would not attempt to keep color in a clear plastic bottle. Both light and air degrade leftover color on the shelf.

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January 22, 20171 found this helpful

I would not use the dye. The directions clearly indicate to throw away any unused portion. These are chemicals and te chemical reactions take place may very well be dangerous.

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February 2, 20170 found this helpful

The directions are talking about throwing away unused portions that are mixed with developer, not unused dye that has not been mixed with developer.

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October 8, 20170 found this helpful

Even just 24 hours later?

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May 13, 20180 found this helpful

Are people really this dumb, throw away unused portion means unused MIXED PORTION guess hubby not so smart lol

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May 26, 20170 found this helpful

I've never saved the leftover hair dye as it can affect your skin and could cause rasher etc, but if you havent mixed it you can keep it but keep out of the sun place it in a cool place

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January 15, 20190 found this helpful

B Google this question. The majority will tell u that mixed color may sil work as long u remove as much air as possible. I've kept mixed dye in a bottle with as much air squeezed out, seran wrapped and in a dark place for a month and used it. I also have very sensitive skin. I also tested it before using it. Also, you people don't have to be such assholes to her. It's a genuine question and those of u being rude, have no idea what ur talking about. Don't act like your all knowing and simply help and point get in the right direction. I mean just all out rude. Just because it worked for me, doesn't necessarily mean it will work for u but id u take the right precautions, u won't look like you've had ch3mo done(that was an unreal comment). If u can't be nice then shut up.

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