Teeth whitening lightens the natural colour of your own teeth, so a real before and after looks like a brighter version of your smile, not a new set of teeth. With the SmilePro Advanced Kit, teeth whiten up to 8 shades in 7 days with one 10-minute treatment a day, and 93% of customers saw results after first use. How big your change is depends on your starting shade and the type of staining.
Before you spend money on any whitening product, it is fair to ask what your teeth will actually look like afterwards. This guide covers what whitening changes, what affects how dramatic your result is, what most people notice day by day, and how to keep the result.
What does teeth whitening actually change?
Whitening lightens the colour of natural tooth enamel by breaking down the stains in it. healthdirect Australia explains that whitening gels use hydrogen peroxide or carbamide peroxide, sometimes with a light. In the SmilePro Advanced Teeth Whitening Kit, you paint a gel with 6% hydrogen peroxide and potassium nitrate onto your teeth, and the blue LED speeds it up; the gel is always used with the light.
The kit includes a shade guide, so you can check your starting shade on day 1 and compare it on day 7. You can see each step on our How It Works page.
What affects how dramatic your before and after is?
Four things make the biggest difference: the type of staining, your starting shade, completing the course, and your habits while you whiten.
Type of staining
Surface stains from coffee, tea, red wine and smoking are the easiest to lift, so they often give the most visible before and after. Stains inside the tooth and age-related yellowing take more work, and whitening will not work for thin enamel, teeth affected by injury, or stains from antibiotics.
Starting shade
The darker your starting shade, the more visible the change tends to be. If your teeth are already quite light, the difference will be smaller.
Completing the course
One treatment a day for 7 days gives the full result. Skipping days, or applying too little gel, makes the result smaller. A thin, even layer is all you need: more gel only spreads onto your gums.
Your habits during the course
After each treatment, wait 1 hour before eating or drinking anything except water. After that you can eat and drink as normal, and rinsing with water after coffee, tea or red wine helps your result last.
What can you expect day by day?
Most customers see a noticeable difference after the first treatment, and the shade keeps improving through the 7-day course.
| Stage | What most people notice |
|---|---|
| After the first treatment | A noticeable difference for most customers. Teeth may look slightly uneven straight afterwards; this evens out within a few hours. |
| Days 2 to 6 | The shade keeps improving with each daily 10-minute treatment. |
| Day 7 | Course complete. Compare with your starting shade on the shade guide: up to 8 shades whiter. |
| Every 2 weeks after | A 10-minute top-up keeps your result going, or once a week if you drink a lot of coffee, tea or red wine. |
What surprises people most?
Three things come up again and again: how quickly the first treatment shows, a short-lived patchy look straight afterwards, and how natural the result looks.
How quickly the first treatment shows
People who expect a slow change over weeks are often surprised by the first session: 93% of SmilePro customers saw results after first use.
Teeth looking slightly uneven straight afterwards
Right after a session, your teeth may look slightly uneven in colour. This is normal and caused by temporary dehydration of the enamel; your teeth rehydrate and even out within a few hours.
How natural the result looks
Whitening lightens your own teeth, so the result looks like your smile, only brighter. It cannot make crowns, veneers or fillings whiter than their original colour: see Does teeth whitening work on crowns and veneers?
Are before and after photos real?
Ours are. The before and after photos on the kit page and our Customer Results page show SmilePro customers after a 7-day course of 10-minute treatments. Individual results vary with your starting shade and the type of staining, and you can read what customers say on our Reviews page.
Tip: take a photo of your smile in daylight before your first treatment, then another in the same spot after day 7. The difference is often easier to see in a photo than in the mirror.
How long do whitening results last?
Teeth whitening is not permanent: how long your shade lasts depends on your diet and daily oral care. A 10-minute top-up every 2 weeks keeps the result going. The SmilePro Continual Care Set has 3 whitening pens with 30 top-ups, about a year at one every 2 weeks, plus SmilePro Whitening Toothpaste, and the pens work with the light you already have. More in How long does teeth whitening last?
Who should not whiten their teeth?
SmilePro whitening products are not for anyone under 18, or anyone pregnant or breastfeeding. Do not use them if you have gum disease, an oral infection or recent dental surgery, or amalgam fillings without consulting a dentist first. If you have sensitive teeth or unhealthy gums, see a dentist first.
Shop SmilePro and see your results for yourself →
Key takeaways
- Whitening lightens your own teeth, so results look natural.
- The SmilePro Advanced Kit whitens up to 8 shades in 7 days, 10 minutes a day, and 93% of customers saw results after first use.
- Surface stains from coffee, tea, red wine and smoking usually give the most visible before and after.
- A slightly uneven look straight after a session is normal and evens out within a few hours.
- After each treatment, wait 1 hour before eating or drinking anything except water.
- A 10-minute top-up every 2 weeks keeps your result going.
Read next: What to expect during your first at-home whitening and Teeth whitening aftercare.
Sources
This guide is general information, not dental advice. If you have any concerns about your teeth or gums, speak to a dentist.
- healthdirect Australia, Teeth whitening, last reviewed February 2025.
- SmilePro product information: Advanced Teeth Whitening Kit (instructions, FAQ and before and after photos), Continual Care Set, How It Works, and our Terms and Conditions.
Last updated: 7 October 2026.
Leave a comment
This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.