Smile Labs Parramatta Cosmetic Teeth Whitening: Things to Know

Since we’ve been open, we’ve had plenty of inquiries regarding teeth whitening. We always hope to be upfront with our clients and set realistic expectations since everyone’s teeth are different. Here we will explain the main things you need to be aware of when getting your teeth whitened at Smile Labs Parramatta.

Caps (now referred to as Crowns)/Veneers

Plenty of people have crowns or veneers. We even have some clients who come in to get their teeth whitened before getting crowns/veneers so they can match them to the shade of their natural teeth after whitening. For those who already have them in place, crowns/veneers can be whitened along with the rest of your teeth, however, it is a bit more difficult to say just how white they will go. Usually, they will whiten back to the original shade that they were when they were first put in.


A lot of clients get concerned about their enamel, as they should be. However, our process does not damage the enamel. Our process simply breaks down the stain layer on our teeth - everything that has built up including food, drink, smoking, medication etc. This is why we can say that you can get your teeth whitened as often as you like until you reach a shade that you’re happy with.

Hydrogen Peroxide

Hydrogen Peroxide is the main whitening agent in our gel formula. Because we are not dentists, the legal limit for us is 6%. While this may be significantly lower than what dentists are allowed, that amount still gets the job done and we have seen some really good results from just one 1-hour session.


We have 4 different sessions available depending on how white you’d like to go. We have 15 mins (2 shades), 30 mins (4 shades), 45 mins (6 shades) and 1 hour (8 shades). For first-timers, we always recommend getting the 1-hour session because it will give you the most visible results. The shorter sessions are good for maintaining the shade you are happy with.

Whitening Potential

Very rarely we do have clients who see little to no difference after getting their teeth whitened by us. Unfortunately, this does happen as everyone’s teeth react differently to our gel formula. This isn’t something we are able to determine until after the session has been completed. In other cases, some clients’ teeth do whiten, but only up to a certain shade.


Our LED light that we use along with the gel has a wide range and will cover most of the teeth. Almost always, the sides of our teeth are a bit darker than our front teeth. As much as possible, we try to get the sides as well because we know that some people have bigger smiles than others, but most of the exposure will be on the front teeth.


As stated earlier, the shorter sessions are good for maintaining your teeth once you have reached a shade that you are happy with. Depending on your lifestyle, the results tend to last between 4-6 months, however, we have had some clients who come back after a year and are still the same shade that they ended up with from the previous session. Keep in mind, this is not a guarantee as everyone’s teeth and lifestyle are different.


Sensitivity is another concern most clients have. Sensitivity is normal after the treatment; however, it is only temporary. The sensitivity only lasts between 24-48 hours and is pretty tolerable during that time.

White Marks

Sometimes after the session is done, white marks can appear on the client’s teeth. This is nothing to be alarmed about even if it doesn’t happen to every client after teeth whitening. Those white marks simply mean that the teeth are dehydrated which is why they are more prominent after the treatment; however, they do fade after a couple of hours.

After Treatment

There are 2 things we ask you to keep in mind once you have finished the session.

  1. For the first hour after the treatment, you will not be allowed to eat anything, but you can drink water.

  2. For the first 24 hours after the treatment, you will have to avoid any dark food or drink. This is because the pores in your teeth will still be open and therefore be prone to staining.

If you are unsure as to what you can and can’t have, read our blog post listing some basic things you need to avoid.

These are the main inquiries and issues we discuss with clients before, during and after the treatment. We hope this will answer some questions you may have regarding our teeth whitening sessions and process. Of course, we are always available for a face-to-face chat, so feel free to book a free consultation in-store or online if you have any more questions.

We’re located on Macquarie St (inside Fitness First) walking distance from the station and Westfield Parramatta, open 6 days a week, and we take after work bookings.


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