Usually, these products are on sale when they are about to expire. Using expired bleaching products means you won't get the results you want. When they expire, the hydrogen peroxide they contain breaks down and leaves only water and oxygen, which doesn't whiten teeth.
teeth whiteninggel may expire and should not be used after the expiration date.
This is not because it is dangerous and poses a threat to your overall health. The problem is that the chemicals won't be effective after the expiration date, which means it won't do you any good. The gel normally expires 12 months after purchase, although some gels may lack an expiration date. If you look at the gel and it looks like it has a hazy color, it has expired and it oxidizes.
At this point, it will have no effect on teeth whitening. The teeth whitening gel in your kit may expire and should not be used for more than 2 years after you purchased it. This is because after 24 months, the active ingredients will not be as effective and the results will not be highlighted. We all want a bargain, but watch out for flash sales of teeth whitening kits.
Often, the reason these kits are on sale is because they are close to their expiration date. If you plan to use the product before it expires, you're fine, but if you think it might take a while, don't buy the product. The main ingredient in whitening gel for bleaching is hydrogen peroxide. Over time, hydrogen peroxide converts to water and oxygen.
If you try to use a whitening kit after its expiration date, you will likely only receive gel and water, as oxygen will have leaked out of the package. Oxygen is the key component for teeth whitening. For best whitening results, discard any product you find in your home that has passed its expiration date. I didn't find anything in SDC gel specifically, but other similar products have a shelf life of approximately 18-24 months.
After that point, chemicals are less effective. Using a gel that has already passed shouldn't be harmful, just less effective for whitening teeth. If the gel is cloudy, it's a sign that it's gone from being better. At this time, you should discard them and buy new whitening gels if you want to continue whitening.
If you choose to use over-the-counter whitening strips to whiten your teeth, keep in mind that these products are designed to be used in a healthy mouth. Look for this seal of acceptance on your teeth whitening products to ensure their effectiveness or talk to your dentist. Your teeth and gums will first be examined to determine if this is the best time to whiten them or if there are other dental problems that need to be addressed first. You don't need to stop staining food completely, but you should avoid them when you're whitening your teeth.
If you plan to go to the grocery store and then leave them in the car, don't make this trip when you pick up your whitening products. Some dentists offer free teeth whitening to patients who have a regular dental cleaning appointment. Generic whitening kits may contain the same peroxide active ingredient, but are not tested to ensure effectiveness. Acidic foods break down tooth enamel, making them more porous and more likely to absorb stains from the foods and beverages you eat.
Custom teeth whitening trays will be fine, especially since they've been on your dresser all this time. Over-the-counter dentist-dispensed household teeth whiteners are eligible for the ADA Seal of Acceptance. On the other hand, if you don't plan to use your bleaching products right away, storing them in the refrigerator can help extend their shelf life. For professional and over-the-counter teeth whitening, the first few days after treatment are the most important.