Does Saliva Affect Teeth Whitening?

Does Saliva Affect Teeth Whitening?

6 minute read

On the journey for a brighter, more radiant smile, teeth whitening has emerged as a popular and effective solution. At the core of many whitening treatments lies a powerful ingredient – hydrogen peroxide. While this bleaching agent works wonders in enhancing the color of our teeth, have you ever considered its impact on a lesser-known yet crucial aspect of our oral health – saliva? In this blog post, we embark on a journey into the intriguing realm where teeth whitening and saliva intersect, focusing specifically on the role of hydrogen peroxide. As we unravel the science behind this commonly used whitening agent, we'll explore how it influences the delicate balance of saliva and its essential functions in maintaining oral well-being. Join us as we delve into the nuanced relationship between hydrogen peroxide and saliva, revealing insights that go beyond the surface of your sparkling smile. Discover the untold story of how teeth whitening may be shaping not just your appearance, but also the dynamic ecosystem within your mouth.

What is hydrogen peroxide and how does it work?

Hydrogen peroxide is an effective bleaching agent that can drastically change the color of teeth. Peroxide can partially penetrate layers of the teeth such as the enamel to remove both deep stains and surface stains. 

Store-bought teeth whitening kits typically contain 3% concentrated hydrogen peroxide, while Novashine uses a 6% concentrated gel. Higher concentrated gels are often less likely to damage enamel, as they whiten teeth faster and will spend less time on the surface of your teeth as a result. 

Teeth Whitening with Novashine

Why does teeth whitening cause increased saliva? 

Saliva plays many roles in our body. One, saliva helps break down food and begins the digestive process. However, it also works to keep out toxins, especially on your teeth. Through a process known as salivary peroxidase, our salivary glands secrete an enzyme known as peroxidase. This enzyme, along with others, breaks down hydrogen peroxide into nontoxic elements, protecting the teeth from potential harm. 

Salivary peroxidase acts as a shield by breaking down hydrogen peroxide into nontoxic elements, mitigating the risk of harm to our enamel and ensuring our teeth remain resilient against external stressors. This intricate mechanism highlights the dynamic interplay between our body's defense mechanisms and the challenges posed by external factors like teeth whitening treatments.

In essence, saliva emerges as not just a passive participant in digestion but as an active custodian of our dental well-being. Its multifunctional nature, particularly in the context of teeth whitening, underscores the sophistication of our body's intricate processes. Through salivary peroxidase, saliva stands as a frontline protector, exemplifying its pivotal role in maintaining oral health amidst cosmetic endeavors and external influences.

Teeth Whitening and Saliva

Hydrogen peroxide isn't something your body encounters regularly. When you feel the urge to spit during a teeth whitening session, it's actually a normal response from your body's immune system. This heightened salivary response is essentially your body's way of addressing the unusual presence of hydrogen peroxide. Saliva, in this scenario, plays a dual role – it acts as a protective shield for your teeth during the whitening process and aids in rehydrating your teeth afterward. It serves as a natural defense mechanism, preventing potential harm caused by the increased levels of hydrogen peroxide used in teeth whitening treatments. So, the next time you find yourself reaching for that spit cup, know that it's just your body's way of maintaining its equilibrium. Saliva, always hard at work behind the scenes, ensures your teeth stay protected and well-hydrated throughout the whitening process. It's a fascinating interplay between your body's immune response and the science of teeth whitening, working together to achieve that brighter, more vibrant smile.

How does saliva impact teeth whitening products?

Saliva is the first line of defense for your body, breaking down foreign bodies before they can fully enter your system. As a result, saliva will try its best to break down teeth whitening agents before they can penetrate your teeth. This can lead to uneven or splotchy whitening.

saliva causes uneven teeth whitening

This is one of the many reasons why you have to choose your teeth whitening products carefully. For one, the dosage of hydrogen peroxide must be high enough to withstand saliva. A 3% dosage of hydrogen peroxide will likely be ineffective in whitening teeth, while a 5% or higher dosage will yield better results. The Novashine Teeth Whitening Kit, as well as the Novashine Pen, both use a higher dosage of hydrogen peroxide to yield maximum results without using it for hours. 

Novashine versus drugstore teeth whitening products


If you’re looking to dramatically whiten your teeth, it’s a good idea to choose a whitening kit that prevents saliva from interfering with hydrogen peroxide or other bleaching agents. Novashine’s Teeth Whitening Kit utilizes a fitted mouthpiece that covers both the front and back of your teeth while using it. This guards the whitening process from chemical interference while speeding up the process with an LED blue light. 

Teeth whitening with novashine

Check out Novashine’s Professional Teeth Whitening Kit or Teeth Whitening Pen and see the difference hydrogen peroxide concentration can make! 


To sum it up, understanding the connection between teeth whitening and saliva sheds light on the factors influencing the outcome of our quest for a brighter smile. Saliva, a silent but influential player, can impact the uniformity of whitening results due to its natural role in breaking down substances. Recognizing the challenges posed by saliva allows us to approach teeth whitening more strategically. The inclination to spit during whitening sessions becomes a sign of our body's attempt to regulate the process. By adjusting our approach—considering factors such as timing and product application—we can work with our body's natural defenses to achieve more consistent and pleasing results. In essence, the journey to a radiant smile is a collaboration between our cosmetic aspirations and the intricacies of our biological makeup. It's not just about the science; it's about acknowledging and working with the body's processes. Armed with this knowledge, we can navigate the path to a brighter smile with greater awareness and confidence. So, here's to the pursuit of that gleaming, confident grin!

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