After teeth whitening instructions

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                                                                           Important notes

1- Do not smoke, drink or eat anything but water during the first 60 minutes after the treatment. (Teeth Whitening gel opens the enamel pores making your teeth vulnerable to staining agents).
2- Do not smoke, eat or drink staining foods after treatment for a period of 24 to 48 hours.  Avoid tea, coffee, red wine, fizzy drinks, currie dark green vegetables and tomato based sauces etc.
3- Use your At home teeth whitening kit once a day for the first 2-3 days then once every 2-3 days until the gel runs out. (This will help you maintain the achieved whitening results and avoid a quick relapse.)

Why is it so important to avoid consuming foods and drinks that contain stain?

Approximately sixty percent of our body weight is water and our teeth are not an exception. Research has shown that during laser teeth whitening treatment a process called dehydration occurs. Dehydration helps removing the stain located inside the tooth structure. Once the process is finished your teeth will automatically try to absorb the water lost during the treatment. The process of re-absorbing this lost water, lasts anywhere between 24 to 48 hours. This is the reason why you should try not to expose your teeth to any types of staining foods and drinks after the whitening treatment. For people that have to  have  a coffee or tea in the  morning we recommend using a straw and try to rinse your mouth with water. More details about  what you can eat after teeth whitening.

Tooth sensitivity

Although uncommon, some people can experience some tooth sensitivity during the first 24-48 hours after the Laser Teeth Whitening treatment. People with existing sensitivity, recently cracked teeth, open cavities, leaking filings or severe recession of the gums are more likely to experience some sensitivity due to their previous conditions. For these preconditions we use professional desensitizing agents to decrease any possible sensitivity that might occur during or after teeth whitening treatment. If sensitivity persists at home after the treatment we recommend using Sensodyne , Colgate Sensitivity toothpaste or over the counter fluoride gel or liquid. Sensitivity tends to remain for a couple of hours and than disappears.

  • You can use pain killers like Tylenol or Advil over the counter to help you with sensitivity.
  • Massage your gums with warm (not hot) salty water for a minute. Prolonged exposure to salt will dry your mouth and it is not recommended more then 3-4 times.
  • During this time avoid cold or hot drinks and try to distract your attention by watching TV, listening your favorite music or reading a book.
  • If  you experience tooth sensitivity from your at home teeth whitening kit: Do not continue the treatment until your sensitivity has completely disappeared.
  • If the level of pain or sensitivity increases drastically you should contact your Dentist


After Teeth Whitening treatment, it is normal for teeth color to regress somewhat over time. This is normal and should be very gradual, but it can be accelerated by exposing the teeth to various staining agents, such as coffee, tea, tobacco, lip stick, red wine etc. During the first post-treatment hour do not eat or drink anything except water. If you purchased the JUSTSMILE AT HOME Touch up pen, be aware that the pores of your enamel will remain open during the treatment, so you should refrain from staining agents until you stop using the pen. Normal habits can resume 24-48 hours after the initial JUST SMILE AT HOME treatment.


Some individuals might be unaware that are allergic to Hydrogen Peroxide, substance in the whitening gel. If blisters or swelling of your lips appear hours after the professional treatment or during your At Home Teeth Whitening treatment, you are most likely having an allergic reaction and you should immediately contact your dentist or physician.


How long the results will last depends on two factors:

  1. Your habits
  2. The porosity of your teeth

If teeth are exposed to staining agents such as tobacco, red wine, tea coffee on regular basis, your whitening results will not last as long as if you didn’t use any of these products in regular basis. If you have naturally porous enamel, your teeth will be more vulnerable to staining agents therefore you will get stained teeth sooner then the average person. Unfortunately there is no way we can find out the level of porosity of your teeth ahead of time.

In cases of porous enamels and if teeth are exposed to staining agents on regular basis, results may last up to a 3-6 months. In cases of non-porous enamels and non exposure to staining agents on a regular basis results may last for up to 2 years.

DON’T FORGET: Your safety is our main goal as Dental Hygienists so don’t hesitate to contact us for any concerns or questions you might have before, after or during the At Home whitening treatment.

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