Teeth Straightening
Teeth Whitening
Updated on November 3, 2023
11 min read

Hismile Review 2023: Is It Worth The Money?

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Hismile Review Summary

This is an in-depth review of Hismile's new and improved teeth whitening kit. The brand recently discontinued and replaced its original kit with the VIO405™, which our team tested in late 2022.

This review covers:

  • A personal experience using Hismile’s teeth whitening kit (from one of our writers)
  • How to use Hismile’s VIO405™ Teeth Whitening Kit
  • How effective Hismile’s whitening kit is, according to research 
  • The difference between PAP (Hismile’s hero ingredient) and peroxide (the most common whitening agent)
  • The oral health benefits of other active ingredients in Hismile’s PAP+ whitening formula
  • Other popular Hismile oral care products 
  • How much Hismile costs 
  • Where to buy Hismile products and the best alternatives

Black Friday Sale: Up to 60% off everything

$119.20 on Hismile

About Hismile

Hismile is an Australian-based brand of peroxide-free whitening and other oral care products. The products are widely used in the UK but are growing in popularity in other countries. 

The brand uses a proprietary PAP+ formula to whiten teeth. The hero ingredient, phthalimido peroxy caproic acid (PAP), claims to whiten teeth quickly and effectively without irritation or sensitivity.

Hismile's whitening formula also has other supporting ingredients that enhance the health of your teeth, including hydroxyapatite and potassium citrate.

hismile kit 2
Newmouth / Erika Veurink

Hismile Ingredients

Hismile’s whitening formula is 100% peroxide-free. Peroxide is the main active ingredient in most whitening products. It has been extensively studied as an effective whitening agent.1-3

Hismile's whitening gel claims to be as effective as peroxide without the unpleasant side effects. Instead, the teeth whitening kit contains three powerful, enamel-safe ingredients:

  1. Phthalimidoperoxycaproicacid (PAP) is clinically proven to whiten teeth without sensitivity or gum irritation
  2. Hydroxyapatite (nHAp) rebuilds the protective layer of teeth and replaces lost minerals
  3. Potassium citrate helps relieve pre-existing sensitivity and provides long-term protection

Why is Hismile Peroxide-Free? 

Hismile products are peroxide-free for a few reasons:

  1. Peroxide causes free radical oxidation that leads to unpleasant side effects. These include tooth sensitivity and gum irritation.1, 4 However, most adverse effects are easily reversible.6 
  2. Peroxide dehydrates the teeth, which is what causes the sensitivity.7 Enamel dehydration produces a temporary, visible tooth shade reduction.7 
  3. Peroxide may demineralize teeth (i.e., loss of important minerals to keep teeth strong and healthy). However, there are mixed studies about whether this is true. One study found that hydrogen peroxide whitening did not affect mineral loss.6 Another study concluded that high peroxide concentrations can lead to demineralization.5 
Hismile PAP product shot
Newmouth / Erika Veurink

The Science Behind PAP

Hismile’s initial goal was to develop a whitening formula that provides peroxide-level whitening without side effects. This is how they discovered PAP and created the PAP+ formulation.

According to Hismile, the PAP+ formula combines expert-level whitening with fast and effective results. Unlike peroxide, PAP doesn’t release free radicals or dehydrate your teeth. This means that the discoloration molecules are broken down safely without the risk of sensitivity, damage, or irritation.8

PAP is a highly reactive whitening agent that lifts stains by targeting internal and external discoloration. Due to its potency, it can whiten teeth after one to two treatments. Results vary.

An independent study found that PAP had immediate whitening effects after a single-use treatment.10

Other Notable Ingredients

The PAP+ formula also contains hydroxyapatite (nHAp). Research shows that hydroxyapatite may be superior to conventional fluoride for cavity prevention.9 nHa also mimics your natural tooth enamel (provides protection) and replaces lost minerals.

It also contains the active ingredient potassium citrate, which helps prevent and reduce sensitivity. One study found toothpastes containing potassium citrate are effective in reducing dentin hypersensitivity.11

My Experience Using Hismile's Teeth Whitening Kit

I saw whitening results after my first 10-minute session with Hismile’s product. I used the Hismile VIO405 Whitening Kit a second time, and the results improved. The images below are the before and after of my smile. 

hismile Before
NewMouth / Erika Veurink
Hismile After
NewMouth / Erika Veurink

Whitening Process

Following the instructions on the packaging, I brushed my teeth thoroughly beforehand. Then, I removed the mouth tray to connect to the LED device.

Wearing the device for just 10 minutes was notably more comfortable than other whitening processes. Plus, 10 minutes is on the shorter end of at-home treatment times. 

Once the blue light switched off automatically, I rinsed the mouth tray and put everything back into its allotted space in the box. 

VIO405 Light

Hismile's new whitening kit combines the brand's award-winning PAP+ formula with the power of VIO405 light technology. The VIO405 kit claims to promote the highest level of at-home whitening.

The light contains 32 LEDs, as opposed to five in traditional whitening lights, and operates on a shorter wavelength.

Based on my experience, I'm unsure if the light sped up the treatment time. However, my teeth were definitely more vibrant after just one session with the light.


As a person with sensitive teeth, I felt apprehensive about integrating a new product into my routine. Thankfully, Hismile's kit did not trigger any sensitivity, as promised

Ease of Use

I was most surprised by how easy it was to use. The whitening gel stays neatly within the trays. Not having to set a timer for the 10 minutes is also very helpful. 

Replaceable batteries and well-made components make the Hismile Teeth Whitening Kit a worthwhile investment for long-term whitening. Additional whitening gels can be purchased on Hismile’s site. 

The included shade guide also makes it simple to track visible improvement in your teeth’s whiteness over time. Simply find the shade that matches your natural state.


Before trying the Hismile Teeth Whitening Kit, I had some yellowing toward my teeth' edges. My stains disappeared after two uses and revealed a more even and bright smile. 

If I had used the whitening kit more than twice, I’m confident my smile would have gotten even whiter. Hismile guarantees results up to eight shades whiter after six 10-minute sessions.

This product is a fantastic way to whiten your teeth at home, thanks to its affordability and ease of use. The immediate results make it a great addition to any pre-event routine. 

I recommend trying this whitening kit if you have sensitive teeth or are looking for an effective and affordable peroxide-free whitening experience.

Black Friday Sale: Up to 60% off everything

$119.20 on Hismile

How to Use Hismile's Teeth Whitening Kit

hismile kit
Newmouth / Erika Veurink

The Hismile VIO405™ Teeth Whitening Kit is very easy to use compared to similar products on the market. The process requires 10 minutes a day (versus up to 30 minutes for other brands). 

The kit includes an LED device with a built-in timer, a universal mouth tray, six whitening pods, and a shade guide. 

To use the kit, follow these simple steps:

  1. Brush your teeth for two minutes before beginning the whitening treatment. 
  2. Apply a layer of the included PAP+ Primer to each tooth. Wait about 10 seconds, then spit it out.
  3. Twist off the cap of the whitening gel. Apply half to the top of the mouth tray and the other half to the bottom. Each whitening refill is enough for one full treatment.
  4. Turn the VIO405 light on by pressing and holding the Hismile logo. Place the light in your mouth.
  5. Whiten for 10 minutes. The device will automatically shut off.
  6. Spit out any excess gel and rinse your mouth with water. 
  7. Clean the tray with water or a wet cloth after use (the VIO405 device is water-resistant).
  8. Repeat daily. Use all six treatments for the best results.

How Quickly Will You See Results? 

I saw results after two treatments. Results vary depending on your level of tooth discoloration. Hismile’s whitening kit comes with six refills (enough for six full treatments).

You’ll likely notice the full benefits after you complete the full treatment course. If you do them back-to-back, this takes about a week (six treatments).

How Long Does Hismile Last? 

Hismile claims the whitening results should last between two weeks and three months. 

How long your teeth stay white depends on lifestyle and diet habits. For example, if you drink a lot of coffee, the results won’t last as long. You’ll need to whiten more consistently. 

Other staining foods include dark-colored berries, red wine, soda, curry powder, and tomato sauce. Cigarette smoke also discolors teeth.

Video credit: Hismile

Meet the Experts

Dr. Roshan Parikh is the Chief Data Officer and Dntl Bar in New York City

Elizabeth Graves is a registered dental hygienist at Take Home Smile, an education platform for Dentists

What Do Experts Think About PAP?

“PAP is used as a bleaching activator for teeth whitening by whitening the discolored molecules in your teeth,” shares Dr. Parikh.

“The inclusion of a nano-particle apatite (nano-hydroxyapatite) and potassium citrate offer additional benefits to the teeth during the whitening process, such as improved enamel structure and the reduction of pre-existing tooth sensitivity,” Dr. Parikh shares.

According to Graves, "The ingredient PAP isn't more widely used in whitening products because it is relatively new to the dental industry. Some dental professionals and most of the general public have not even heard of it.” 

"With the promising research about its effectiveness and safety, PAP will surely be replacing hydrogen peroxide in whitening treatments," Graves adds. 

Other Hismile Products 

In addition to the Hismile VIO405™ Teeth Whitening Kit, Hismile offers other oral care and whitening products. Here's a short overview:

  • PAP+ Whitening Strips™ use the same formula as the teeth whitening kit but with added convenience. The strips offer effective peroxide-free whitening on the go. 
  • PAP+ Whitening Powder™ is another convenient whitening treatment that can be used daily or when needed. The toothpaste is designed to provide gradual whitening results. It also includes ingredients that protect your teeth from damage and decay. I tested this product.
  • V34 Colour Corrector Serum neutralizes yellow undertones and brightens dull white teeth.
  • HA5 Hyaluronic Mouthwash is a refreshing mouthwash that maintains healthy gums, boosts hydration without alcohol, and improves oral hygiene. Recommended for daily use.
  • HA5 Hyaluronic Serum targets gum and soft tissue concerns with a high concentration of hyaluronic acid (HA). The serum hydrates gums and improves saliva production, helping to prevent dry mouth and cavities.
  • NHpro Enamel Care targets enamel remineralization and manages sensitivity.
  • iD Stain Eraser identifies stains on teeth you didn’t know existed. After they are identified, you can remove them with the stain eraser paste. Recommend using for upkeep.
  • PAP+ Whitening Pen is an on-the-go option that contains Hismile's PAP+ formula for gradual, convenient whitening.

Hismile vs. Other Brands 

Here's how Hismile compares to other at-home whitening kits:

BrandCostActive Ingredient(s)Sensitivity LevelSession Length
Hismile$149Phthalimidoperoxycaproic-acid (PAP)Zero10 minutes daily; 1-2 treatments
Snow$149Hydrogen peroxideMinor9-30 minutes daily; 21 days
Auraglow$48.95Carbamide peroxideMinor30 minutes daily; 7-14 days
Glo$159Hydrogen peroxideMinor8 minutes daily; 5-10 days

1. Hismile vs. Snow

The Snow Teeth Whitening Kit offers fast whitening results guaranteed. The kit has 99.3 percent ratings across 500,000+ customers. 

Snow brands itself as a comfortable, safe, and convenient way to whiten your teeth at home. The serum is specifically designed to reduce sensitivity. Each treatment session takes 21 minutes or less. 

Note: This teeth whitening kit is not peroxide-free.

Read our full review of Snow here.

2. Hismile vs. Auraglow

Auraglow's best-selling Teeth Whitening Kit is less expensive than many competitors. It comes with an LED mouthpiece, charging device, and whitening gel. According to their website, over 5,000 happy reviewers agree this kit is one of the best in the industry.

Auraglow recommends using the whitening kit for 7 to 14 days in a row for the best results. 

Note: This teeth whitening kit is not peroxide-free.

Read our full review of Auraglow here.

3. Hismile vs. GLO

The GLO Brilliant Teeth Whitening Kit is clinically proven to whiten up to five shades lighter in five days. Unlike many teeth whitening products on the market, GLO is also FDA-approved.

GLO Science products do not cause sensitivity in the majority of customers. Even if you experience sensitivity, it will likely be very mild and temporary. Each treatment session takes 32 minutes (8-minute intervals).

Note: This teeth whitening kit is not peroxide-free.

Read our full review of GLO here.

Why Trust Our Review of Hismile?

NewMouth is a leading and trusted online resource for dental information, including professional and at-home teeth whitening, how they compare, safety, and what to look for in products. 

We have a dedicated team of medical writers, expert researchers, licensed dental professionals, and medical reviewers who create and oversee every article. Our goal is to provide credible, accurate, and up-to-date content that is free and accessible to everyone looking for dental care. 

We determined Hismile as an effective whitening brand by:

  • Comparing Hismile to dozens of other brands, including pricing, results, upkeep, ease of use, safety, ingredients lists, return policy, and more
  • Talking to industry experts about at-home whitening
  • Reading through hundreds of reviews from multiple sources
  • Conducting 30+ hours of research on the effectiveness of at-home whitening, ingredients, safety, and bleaching agents
  • Having three writers test out Hismile's whitening kit and other products

How Much Does Hismile Cost? 

Here is a complete list of Hismile’s products and their costs:

VIO405™ Teeth Whitening Kit$119.20
PAP+ Whitening Powder™$25
V34 Colour Corrector Serum $29
HA5 Hyaluronic Mouthwash$29
HA5 Hyaluronic Serum$32
NHpro Enamel Care$39
iD Stain Eraser$35
PAP+ Whitening Pen$25

Where Can I Buy Hismile?

Hismile Teeth Whitening

Hismile kit 1

Hismile uses a proprietary PAP+ formula to whiten teeth. The hero ingredient, phthalimido peroxy caproic acid (PAP), claims to whiten teeth quickly and effectively without irritation or sensitivity. The VIO405 whitening light is Illuminated by 32 LEDs and operates on a shorter wavelength, potentially speeding up results.

Rating by Alyssa Hill

Overall Value
Treatment Time
Customer Service

Hismile’s initial goal was to develop a whitening formula that provides peroxide-level whitening without side effects. This is how they discovered PAP and created the PAP+ formulation.

According to Hismile, the PAP+ formula combines expert-level whitening with fast and effective results. Unlike peroxide, PAP doesn’t release free radicals or dehydrate your teeth. This means that the discoloration molecules are broken down safely, without the risk of sensitivity, damage, or irritation.


Black Friday Sale: Up to 60% off everything

$119.20 on Hismile

Last updated on November 3, 2023
13 Sources Cited
Last updated on November 3, 2023
All NewMouth content is medically reviewed and fact-checked by a licensed dentist or orthodontist to ensure the information is factual, current, and relevant.

We have strict sourcing guidelines and only cite from current scientific research, such as scholarly articles, dentistry textbooks, government agencies, and medical journals. This also includes information provided by the American Dental Association (ADA), the American Association of Orthodontics (AAO), and the American Academy of Pediatrics (AAP).
  1. Basting, RT, et al. “Clinical Comparative Study of the Effectiveness of and Tooth Sensitivity to 10% and 20% Carbamide Peroxide Home-Use and 35% and 38% Hydrogen Peroxide In-Office Bleaching Materials Containing Desensitizing Agents.” Operative Dentistry, Allen Press, 2012. 
  2. Mokhlis, G R, et al. “A Clinical Evaluation of Carbamide Peroxide and Hydrogen Peroxide Whitening Agents during Daytime Use.” Journal of the American Dental Association, U.S. National Library of Medicine, 2000.
  3. Zekonis, Ruta, et al. “Clinical Evaluation of in-Office and at-Home Bleaching Treatments.” Operative Dentistry, U.S. National Library of Medicine, 2003. 
  4. Cvikl, B, et al. “Enamel Surface Changes After Exposure to Bleaching Gels Containing Carbamide Peroxide or Hydrogen Peroxide.” Operative Dentistry, Allen Press, 2016. 
  5. Cavalli, Vanessa, et al. “Effects of Experimental Bleaching Agents on the Mineral Content of Sound and Demineralized Enamels.” Journal of Applied Oral Science : Revista FOB, Faculdade De Odontologia De Bauru - USP, 2018.
  6. Demarco, Flávio Fernando, et al. “Erosion and Abrasion on Dental Structures Undergoing At-Home Bleaching.” Clinical, Cosmetic and Investigational Dentistry, Dove Medical Press, 2011.
  7. Tavares, Mary, et al. “Light augments tooth whitening with peroxide.” The Journal of the American Dental Association, 2003.
  8. Hismile Research Centre - Advanced Teeth Whitening Research: Hismile™.” Hismile US.
  9. Pepla, Erlind, et al. “Nano-Hydroxyapatite and Its Applications in Preventive, Restorative and Regenerative Dentistry: a Review of Literature.” Annali Di Stomatologia, CIC Edizioni Internationali, 2014.
  10. Bizhang, Mozhgan, et al. “Effectiveness of a New Non-Hydrogen Peroxide Bleaching Agent after Single Use - a Double-Blind Placebo-Controlled Short-Term Study.” Journal of Applied Oral Science : Revista FOB, Faculdade De Odontologia De Bauru - USP, 2017.
  11. Shen, Shih-Ya, et al. “Clinical Efficacy of Toothpaste Containing Potassium Citrate in Treating Dentin Hypersensitivity.” Journal of Dental Sciences, 1991.
  12. What Is PAP and Is It A Safe Teeth Whitening Method?” Ask the Dentist, 2021.
  13. Pascolutti, M, et al. A Radical-Free Approach to Teeth Whitening” NIH, 2021.
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