Does Hair Dye Expire? 5 Signs Tells Your Dye Is Expired

We’ve all done it: you buy hair dye, promptly forget about it, and it sits on a shelf for months until you finally stumble across it while looking for band-aids, and decide to color your hair right that minute because it’s cocktail-o’clock and it seems like a good idea.

You never stop to question, “Does hair dye expire? Should I seriously be putting this on my head?” You’re more apt to think, “What’s the worst that could happen?” Oh, my friend, you don’t want to even contemplate the very worst thing that can happen—but you need to, especially if you’re a fan of frequent color changes.


Can Hair Dye Expire? Read on

First of all, here are the hard numbers: most hair color brands state that an unopened tube or bottle of hair dye is good for three years. Some companies swear that their product has an unlimited shelf life, but I personally find that unbelievable and don’t want to experiment to see if it’s true.

Now, that’s for unopened dye. Let’s talk about open containers of color.


Does Hair Dye Expire after Opening It?

Surely, at least once, you’ve ended up with hair dye left in the bottle and been loathe to throw it away, right?

So, does hair dye expire after opening it? Yup. The basic school of thought is that hair dye expires 1-2 years after opening it. Mind you, that’s for professional colors.

Drugstore brands and cult products such as Manic Panic likely go bad much more quickly. It’s not hard to tell if you’re dealing with over-the-hill hair dye. Extreme changes to the color of the product are a dead giveaway.

You might also notice a strong or unpleasant odor after opening the container. Sometimes, the expired dye will also separate. It looks murky as if it needs to be shaken or stirred. At that point, just chuck it.

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Side Effects of Expired Hair Dye 

If you dye your hair anyway, then you have to own the consequences. Before taking the risk, maybe you need to hear about some of the worst expired hair dye side effects.


#1: Is Green Your Color?

green color hair dye

You know how chlorine can turn bleached hair green? Well, expired hair dye can do the same thing, and it doesn’t even matter if your hair is bleached. Using dye once it’s expired changes its chemical makeup—and the way it reacts with your hair. Dark green locks are one of the most frequent complaints people have after taking their chances with expired hair color.

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#2: Color Roulette

colorful hair dye

Green hair isn’t the only color concern associated with a dye that’s past its prime. You really have no way of knowing what color you’ll end up with after the application. It’s possible that you’ll end up with no change whatsoever—the dye might be entirely ineffective. Then again, it could also produce a color that’s totally different from the shade on the box.


#3: Feel the Frizz

curly hair dye for women

Hair dye that passes its use-by date can be dangerous, not just inconvenient. It can cause serious damage to your hair. After you rinse, you may end up with a frizzy mess that either needs intense TLC or a big chop.

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#4: On Fire

No joke. The risk of burning your scalp is one of the worst expired hair dye side effects imaginable. And not only can expired dye scorch your tender scalp, but it can also lead to hair loss. Is it worth the risk?


#5: Fade Away

 black brown hair dye

Lastly, expired hair color isn’t as strong, intense, or pigmented. Even if you end up with the color you wanted in the first place, it might not last long. Expired dye tends to fade even faster than fresh color. Then you’ve wasted time and risked your hair for nothing, essentially.

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Honestly, what do you save by using expired hair dye? A few bucks? Don’t chance it.

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