Removes 10 years of stains in just 3 days. Whiter teeth in just 1 day when used as directed. Our highest level of hydrogen peroxide in an over-the-counter whitening toothpaste.

After less than 5 days of consecutive use, my teeth had a noticeable white shine to them in comparison to the non-whitened teeth. It works exceptionally well with stains, but it takes slightly more time with discolored teeth. With all that being said, the biggest drawback is that it is not very easy to use.

“Some toothpaste have abrasive particles, which can remove superficial stains but can damage tooth structure over time. One brand that I recommend is Colgate Optic White because it ranks well on the Toothpaste Abrasive Index and whitens with hydrogen peroxide.”

Propylene Glycol, Calcium Pyrophosphate, PVP, PEG/PPG-116/66 Copolymer, PEG-12, Glycerin, Flavor, Hydrogen Peroxide, Sodium Lauryl Sulfate, Silica, Tetrasodium Pyrophosphate, Sodium Saccharin, Disodium Pyrophosphate, Sucralose, Phosphoric Acid, BHT, Water.

Contains clinically proven technology to safely remove surface stains. Enamel-safe teeth whitening, that's good for daily use.

Also if they contain peroxide for the bleaching action that it has for whitening, it will eventually cause more erosion of the outer layer and hence sensitivity and weakening of tooth structure. Prolonged use can lead to sensitivity which is evident in your case.

Colgate Optic White toothpaste contains a 1% hydrogen peroxide concentration. Hydrogen Peroxide is the same ingredient used in many whitening products.

For optimum whitening results patients should refrain from eating and drinking for 30 minutes after treatment.

Indications and Usage. Intended use: The Colgate(R) Optic White(R) Professional system is intended for at-home teeth whitening. The full at-home procedure includes 35 applications, or 3-7 treatments of 5-10 days each.

Colgate Optic White toothpaste contains a 1% hydrogen peroxide concentration. Hydrogen Peroxide is the same ingredient used in many whitening products.

Hydrogen peroxide is an inexpensive household product you probably have on hand right now. When used carefully, it can be an effective way to whiten your teeth. But if used incorrectly - in concentrations that are too high or if used too often - it can cause serious and sometimes expensive tooth damage.

For optimum whitening results patients should refrain from eating and drinking for 30 minutes after treatment.

In general, it's recommended that you wait at least 30-60 minutes after teeth whitening before you eat or drink anything other than water, the same as you should wait to eat or drink anything for about 30-60 minutes after brushing your teeth.

Usually store-bought hydrogen peroxide has a concentration of about 3%, so it's safe for your mouth. At only 3% hydrogen peroxide and 97% water, it's so unstable that it can just turn into water over time.

Toothpastes and mouth rinses should not contain more than 0.1% hydrogen peroxide. The use tooth whitening products containing 0.1 to 6 % hydrogen peroxide entails potential risks for the consumer. These risks increase with increasing concentration of hydrogen peroxide and frequency of application.

If you do this more than once a day or week, then there is a chance that your enamel can become eroded. A thin enamel is at risk of developing cavities because of the bacteria and acid solution in the mouth. It's important to note that it is a bleaching agent and can cause tooth sensitivity if used too frequently.