What is the answer to this question, if I find out that my nail polish bottle has actually expired? The simple answer is yes. If you find a used nail polish bottle, you are probably going to be able to sell it for a few bucks.
But then again, you might find out that your nail polish is spoiled and the color is very distorted or faded. It might also have some yellowed areas that have come from being exposed to air, sunlight, and water, but in general, if you notice any of these symptoms, it is okay to use it.
The only problem is that using it on an already stained nail polish bottle could make your nail polish look worse than it did before you had it. Expired nail polish is still potent and so when you put it on an already stained bottle, you could cause damage to the bottle itself.
Also, when you take out the cap of the bottle with the nail polish in it, you could get fumes and chemicals in the air that would be bad for you, especially if you have respiratory problems already. You really shouldn’t be putting nail polish on your nails if you aren’t sure about it.
How Long Does Nail Polish Last Before It Becomes Expired?
Many people believe that the answer to the question, How long does nail polish last before it wears off, is simply a matter of choosing the right nail polish for their own particular skin tone and situation.
While this is true, another very important factor that can determine how long nail polish lasts is the type of nail polish used. Most brands of nail polish contain an ingredient called nitrocellulose. This ingredient has a tendency to build up and eventually wear down the surface of the nail plate.
When this happens, the protective top layer of the nail will not be able to protect anymore nails from external elements and the nail polish itself will begin to show signs of wear and tear.
How long does nail polish last before it begins to wear off is a very subjective question that only you can answer. There are a number of factors that can contribute to how long nail polish lasts including the brand you purchase and the type of nail polish used.
If you choose to use nail polish that contains Nitrocellulose, then your nail polish will last for quite some time. It is important to note though that because this ingredient is difficult to remove after it has been applied, you will need to be very careful about what products you choose to use around your nails.
Anything that may stain your nail polish or may even be irritating to your skin can wear away at the base of your nail, which can eventually lead to unsightly damage.

Can Old Nail Polish Make You Sick?
Can old nail polish make you sick? Well, it may not. You see, there are a number of things that have been discovered to make the nail bed itself, quite sick.
As a side note, if you’re thinking about using nail polish, or any kind of artificial nails, it’s a good idea to test it on a small, out of site part of your body, before actually going ahead and doing it. If you test it and find that you are quite ill with rashes, or any other strange discomforts, don’t use it.
Old nail polish is a very common problem for nail technicians, as well as for the average person who just want some “shine” into their finger tips. So, can nail polish make you sick?
On one hand, if it’s an artificial product (or something that could be painted over with another product), then yes, it can make you sick-and very often, it’s the artificial product (nail polish, etc.) that is the cause of the sickness, and not the nail polish.
But if you have a problem with nail polish (and hopefully you won’t have a problem with old nail polish either) then it’s probably the nail polish that is making you sick.
Old nail polish will dry out your skin on the nail, and it will also have built up in your mouth an odor that is unpleasant. Can nail polish make you sick? Well, probably not, but it is an irritant.
How Can You Tell If Nail Polish Has Gone Bad?
Nail polish has a sticky side, like an orange peel. So how can you tell if your nail polish is ever going to start to peel? You have to be able to look at it and see if the color is peeling or is just fading slightly.
It’s a very subtle difference, but you will usually know it is old nail polish if it is starting to become dark or looks dull. Expired nail polish bottles are always discolored.
Can you spot tell if a nail polish bottle has been opened? You must be able to look at the bottle and tell if the color of the nail polish has been severely faded.
It’s a very easy thing to spot: if you hold the bottle up to the light, it should look white. If you hold it up against your nail, the nail polish will still be white, but you may be able to see a hint of yellow at the tip of your nail.
If all of these things sound familiar to you, then it’s possible that you have an open nail polish bottle. If you are seeing any of these signs, you need to call a professional to ask what the problem is and get it fixed.
There are times when you can get by with replacing a small portion of nail polish, but more often than not, if you don’t fix it right away, the problem will only get worse.
How Long Does Nail Polish Last If Not Opened?
Every woman is always concerned of her hand and nails and wants the best for them. For this reason you will always go and buy new nail polish bottles as soon as they are available in the market. The question now is that how long does nail polish last if not opened?
Well, it depends upon a number of things but the most important factor is that your nails have to be properly taken care of in order to keep them healthy. You do not want to take your beautiful nails for granted, so make sure that you maintain them in all possible ways.
You can take proper care of your nails by following few tips. If your nails are too white and you apply too much polish on them then it might cause them to turn yellow. It is better to use nail polish that is light yellow in color rather than dark yellow since they look better.
You can also clean your nails with warm water and a bit of nail polish remover solution. Make sure that the solution is not very strong because then it might damage your nails. If the problem is severe, you can consult a doctor and get a stronger medicine to treat it.
The other factor that determines how long does nail polish last if not opened is whether you take them out every time you clean your nails or not. If you clean your nails at regular intervals then the nail polish will not last long.

Is it Okay to Use Expired Nail Polish?
If you have just applied a new coat of nail polish and your nails seem to be dry and brittle, it may be okay to use nail polish that has been used once.
If the previous nail polish was left on the nail for more than seven days, it could cause damage to the nail bed and cause it to break.
It can also affect the cuticles underneath the nail. The good thing is that this type of damage is not permanent and will fade after a few weeks or months depending on the natural color of your nails.
When a nail polish bottle gets past the shelf life of one year, it may be okay to apply it on another nail. This method will allow you to get the same look you had when it was new but it won’t last as long. There are some disadvantages though.
Some types of nail polish may react with artificial nails and cause them to turn yellow instead of white. Using an artificial nail that is the same color as yours will make it hard for you to hide smears and make the nails difficult to keep clean.
Conclusion
If you are still using nail polish that has been used once, it might be okay to use it on another nail as long as you thoroughly wash it off first. However, if you have just applied a fresh coat of nail polish and your nails are yellowing or breaking apart, it is not okay to use the product on another nail.
Using an artificial nail that is the same color as yours can cause your nails to break easily. You should also be sure to carefully read the label and follow the directions on the bottle when applying nail polish.