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156 Customer Reviews

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HiSmile offers a peroxide-free alternative to at-home whitening products and promises to give you the same quality of results with less risk of sensitivity and enamel erosion. Most users liked their results, but some still experienced tooth pain and damage.


  • No peroxide ingredients (less risk of enamel problems)
  • Active ingredients show clinical evidence for whitening


  • More expensive than other brands
  • Not all users experience results
  • Still led to enamel damage for some customers

HiSmile Review: An In-Depth Look

By Lydia Noyes

Updated on: Jun 22, 2020

HiSmile offers a home teeth whitening kit that it claims will give you a brighter smile without pain or permanent tooth damage. You can purchase a whitening kit and as well as refills to maintain your results over the long term.

Our analysis will help you understand if this product works and if it is the right option for you.

How Does HiSmile Work?

HiSmile teeth whitening kit combines a whitening gel with LED light to purportedly deliver long-term results through treatment sessions that can last as little as ten minutes.

As with most home whitening kits, HiSmile will only work for certain kinds of tooth staining.

“This at-home method is the most effective on teeth stained by coffee, wines, or food,” shares Dr. Mike Golpa, a dentist and CEO of the G4 by Golpa dental implant centers. “It won’t be that useful on teeth yellowing due to aging or naturally yellow dentin.”

To use, you will need first to brush your teeth and attach the whitening mouth tray to the LED light. Twist off the cap of the gel syringe and apply ¼ of the gel pack to the top of the tray and another ¼ to the bottom.

Put the tray on your teeth and turn the light on. The device will automatically turn off after a ten-minute session, and you can then rinse out any excess gel.

The treatment will continue to work on your teeth until you eat or drink again, so the company recommends whitening your teeth right before bed.

For best results, repeat the treatment for at least six nights. Your results should last at least 3-4 weeks, and you can purchase HiSmile Gel Refills to maintain your results over time.

Expect to get two uses per syringe, and plan to treat your teeth approximately once every two weeks.

The whitening effect will last longer between treatments if you avoid dark foods and staining drinks like red wine and coffee. Store the syringes in a cool, dry place between use.

Though this whitening product is recommended for people 12 and over, pregnant and breastfeeding women should speak with their doctor before use.

It’s also suitable for all kinds of natural teeth (even if you have fillings), though having braces can lead to uneven results. Those with veneers and crowns should talk with their dentist first, as these won’t respond to whitening like your natural teeth.

Analysis of Key Ingredients

Unlike many teeth whitening products, HiSmile doesn’t contain hydrogen peroxide and instead relies on the following ingredients:

Phthalimidoperoxycaproic acid (PAP) is an active bleaching agent that oxidizes discolored molecules inside your teeth so that they have a whitening effect. The company claims it is as effective as traditional teeth whitening agents but runs less risk of harming your enamel than hydrogen peroxide.

One 2017 study found that a bleaching agent containing PAP produced significant whitening effects for teeth compared to placebo within 24 hours of a single treatment.

Hydroxyapatite is the primary inorganic material that makes up your bones and tooth enamel. In whitening products, it acts as a restoration treatment for the surface of your teeth that also provides a whitening effect. Evidence shows that it can act as a promising alternative to oxidizing bleach treatments.

Potassium Nitrate is a common desensitizing agent used in dentistry to protect your nerves during drilling procedures. It’s added to whitening products to make them more comfortable to use and reduce tooth sensitivity.

The other component of this teeth whitening system is the LED lighting. According to HiSmile, LEDs accelerate the teeth whitening process by activating the gel and getting it to work faster.

However, the clinical evidence for these results is sparse. One 2012 study compared the whitening results of an in-office dental treatment to LED/gel treatments and found that the home treatment’s effects were insignificant compared to the in-office whitening.

Another study in 2014 confirmed that using a light activator during a whitening treatment had no impact on the process or the overall whitening results.

Analysis of Customer Reviews

More than 150 customers have left reviews for HiSmile on our site, and these average 3.7-stars out of five. Here’s a summary:

Common Compliments:

  • Led to real whitening within a week
  • Easy and comfortable to use
  • Worked better than other brands

Common Complaints:

  • Didn’t whiten all user’s teeth
  • Some received faulty products
  • Damaged some user’s enamel
  • Not as effective as other whitening brands
  • Difficult to get in touch with customer service

Pricing and Return Policy

  • The HiSmile Home Whitening Kit costs $59.99. It includes a mouth tray, LED light, and three gel packs, which is enough for six whitening treatments.

  • Three-pack Gel Refills are available for $23.99.

  • You can also sign up for a Gel Refill subscription. Choose a refill frequency between one-three months, depending on your usage, and you’ll receive a 15% discount on every order for a total of $20.39.

HiSmile guarantees that your teeth will look a minimum of two shades lighter after using this kit as directed. You can request a refund if that doesn’t match your experience.

Popular Alternatives to HiSmile

HiSmile AuraGlow Snow Teeth Whitening
Price $59.99 $59.99 $149 (original) or $299 (wireless)
Products Included
  • Mouth Tray
  • LED Light
  • Three gel packs (enough for six treatments)
  • LED device
  • Two 5ml 35% carbamide peroxide whitening gel syringes (enough for 20 treatments)
  • Comfort fit mouth tray and storage case
  • LED mouthpiece
  • Three original strength and one extra strength serum wands (enough for 75 treatments)
  • Teeth whitening progress tracker
  • The wireless kit also includes anti-aging lip balm and desensitizing serum
Is Subscription Available? Yes, save 15% on gel refills Yes, save 25% on gel refills Yes, save 15% on serum refills
Active Ingredients Phthalimidoperoxycaproic acid (PAP), Hydroxyapatite, Potassium Nitrate Carbamide peroxide (35% and 44%) Hydrogen peroxide (6%-18%)
Reviews 3.7, 155 reviews (HighYa) 4.4, 13,700 reviews (Amazon) 3.0, 22 reviews (HighYa)

The two popular alternatives rely on peroxide ingredients.

Hydrogen peroxide is considered the traditional option for whitening teeth, and it’s what your dentist is most likely to use for in-house treatments.

It’s a common ingredient found in everything from medical supplies to mouthwash, but high concentrations have the potential to harm your enamel and consequently trigger tooth sensitivities.

Studies have found that lower concentrations used less frequently are the safest option, so keep this in mind when planning whitening treatments.

Carbamide peroxide can produce similar results, but it’s less likely to cause damage and takes longer to develop on the teeth.

This can be a pain if you want to eat and drink within a few hours after treatment, and it means that AuraGlow whitening products will work best before bed, not the middle of the day.

If you have sensitive teeth or are susceptible to enamel problems, we recommend sticking with HiSmile over the other two brands due to the lack of peroxide.

The Bottom Line

HiSmile teeth whitening products offer a viable alternative to potentially damaging peroxide, and clinical evidence and customer reviews both indicate that they will work.

At $10 per whitening treatment, you’ll pay much more for this brand than some of its competitors, and there’s minimal evidence that the LED light will make any difference for your teeth.

If you have a peroxide sensitivity, this is a brand we recommend.

Keep your expectations realistic about what your results could be and remember that they will be temporary—you’ll need to purchase more gel packs to maintain them over time.

Customer Reviews

3.7 Stars out of 156 Reviews
5 Star:60% 4 Star:5% 3 Star:1% 2 Star:6% 1 Star:26%
64% Recommend This Product
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Posted on Feb 26, 2021

Save your money

By Julia F., England, Verified Reviewer

Tried for 6 days, followed instructions, no change at all.

Save your money, it does not work, and it's expensive. Stick to regular whitening toothpastes, they work faster.

Length of Use: Less than 3 months

Bottom Line: No, I would not recommend this to a friend

Pros and Cons

The advertising

It doesn't work like it says

Posted on May 20, 2020

Don’t work

By Lynia A., North Carolina, Verified Reviewer

Bought with Afterpay a set and a refill pack. Teeth are still yellow. Used actually like it says, the last two applications I even tried to leave on for two intervals and still nothing. Teeth at the bottom still yellow as before. Didn’t take pictures because I was for sure it would work. Guess I was wrong. Only had for 3 weeks and still got to finish paying for it. Dud.

Bottom Line: No, I would not recommend this to a friend

Posted on May 19, 2020

Very bad experience

By Tara M., United Kingdom, Verified Reviewer

I ordered from this company who sent me out a faulty item. The batteries they sent did not work so was unable to use. I send them 3 emails to which I got no response so I sent the item back. I still had nothing from them and managed to contact on Twitter where they lied that they had replied to my email, told me that they can’t assist as I had opened the box? Makes no sense, so now I have wasted my money on a faulty product that I have now sent back and there is no word of any resolution of me receiving a refund due to the faulty item? I’m shocked by how bad this company has handled my situation. AVOID!

Bottom Line: No, I would not recommend this to a friend

Posted on Dec 30, 2019

This does not work

By Rishi B., London, England, Verified Reviewer

I followed each step carefully and was sent a guide on how to use it by the company themselves. This did not work and in fact, made my teeth look more yellow than before. I thought this would work. I applied everything correctly and used this at night after brushing my teeth. I avoided bad foods yet despite this, it did not help.

Bottom Line: No, I would not recommend this to a friend

Posted on Sep 24, 2019

Not worth the risk

By D M., San Diego, CA, Verified Reviewer

Just reading these reviews are scary! It’s bad for your enamel and you shouldn’t keep using or lose all of your enamel? I had some sensitivity after the 3rd use and they did not appear any whiter after the 6th use. I regret purchasing this product and I’m waiting for a reply back from them and I’ll post there response!

Bottom Line: No, I would not recommend this to a friend

Helpful Review? 4 People Have Voted

Posted on May 28, 2019

Total waste of money

By Vladimir R., New Jersey, Verified Reviewer

It is not working at all! Stay away, it is a scam. No sensitivity - yes, but it's is not whitening your teeth. Total waste of money and time!

Stay away, stay away, stay away.


Bottom Line: No, I would not recommend this to a friend

Company Response from HiSmile

Jun 16, 2019

Hey Vladimir,

I'm sorry to hear our Kit fell short from giving you the results you’d been hoping for. We would love to assist you further if you can email help@hismileteeth.com with your order number and reference this review.

We look forward to assisting you further!

Helpful Review? 5 People Have Voted

Posted on Apr 26, 2019

Doesn't work. Bad customer service.

By David M., Dublin, Ireland, Verified Reviewer

I bought this with good expectations but after a full use of its six days, my teeth looked exactly the same. After each use, I did not notice even a slight change, which was disappointing.

I emailed customer service dept about two weeks ago explaining my dissatisfaction and I never heard back from them even though there is supposed to be money back guaranteed.

A certain scam and please don't be fooled. It doesnt work.

Bottom Line: No, I would not recommend this to a friend

Company Response from HiSmile

Jun 16, 2019

Hey David,

We're sorry to hear our Kit fell short from giving you the results you’d been hoping for. We can assure you we respond to every email we receive. Can you confirm you emailed help@hismileteeth.com as we'd like to help you with your money back guarantee as soon as possible.

We look forward to assisting you further!

Helpful Review? 7 People Have Voted

Posted on Feb 25, 2019

No result

By Lisa S., Los Angeles, CA, Verified Reviewer

The videos and reviews show that it makes your teeth shade lighter, and after multiple uses as directed, with the day and night toothpaste, I did not notice any difference at all.

Crest white strips did way more for me than this.

Do not recommend - advertisements seem skewed.

Bottom Line: No, I would not recommend this to a friend

Company Response from HiSmile

Jun 16, 2019

Hey Lisa,

We're sorry to hear our Kit and Day & Night Toothpaste fell short from giving you the results you’d been hoping for. We would love to assist you further if you can email help@hismileteeth.com with your order number and reference this review.

We look forward to assisting you further!

Helpful Review? 9 People Have Voted

Posted on Nov 28, 2018

Not impressed

By Lily B., Brisbane, Australia, Verified Reviewer

I ordered this after seeing all the ads that made it seem that HiSmile seriously whitened your teeth. When I ordered a while back, they claimed it would whiten my teeth by 8 shades. Today, I went back and their claim has gone down to 2 shades. I’ve ordered twice in hopes that my teeth would reach the maximum white they could. However, after two purchases (12 sessions) my teeth are maybe 1 shade lighter (if I’m really pushing it). Not impressed. I am going to head to the dentist from now on. I blew 120 bucks on the stupid thing.

Bottom Line: No, I would not recommend this to a friend

Company Response from HiSmile

Dec 12, 2018

Hey Lily,

Thanks for taking the time to leave your feedback. We understand that not achieving desired results may be disappointing however as each individual's teeth respond differently to the whitening process, due to this we implemented our 30-day money back guarantee!

If you do not achieve results of at least two shades whiter you can apply for your money back via the FAQ page on our website by clicking "email us" and selecting money back guarantee.

Each individuals lifestyle choices may inhibit the overall outcome of the whitening process, and we recommend limiting the intake of staining food and drinks to assist in optimal results. This is why we state you can achieve up to eight shades with our Kit, however, are confident you will achieve at least two shades whiter! We would love to chat and assist you further. I am unable to find you in our system, please email us at help@hismileteeth.com

We look forward to speaking soon.

Helpful Review? 28 People Have Voted

Posted on Nov 13, 2018


By Juliana I., Israel, Verified Reviewer

An amazing experience! My teeth got whiter in just six days! I loved it and the results are really fast and safe. I really recommend this product to everyone that wants whiter teeth fast. The product is so simple to use, and the directions are very clear. You can really see a difference from the first use! I loved it!

Bottom Line: Yes, I would recommend this to a friend

Company Response from HiSmile

Nov 19, 2018

Hey Juliana! We appreciate your feedback, and we are so happy you have had such a positive experience with our products. Our main aim is to create a product this quick and easy, so we are happy you experienced this and saw results within just six days! Welcome to our family!

Helpful Review? 3 People Have Voted

Posted on Oct 24, 2018

A clear difference

By Shyanne C., Verified Reviewer

I have very sensitive teeth so using Crest Whitestrips never went well for me, but after using HiSmile, I realize I never need those strips again. My teeth were clearly brighter just after two applications, and I started receiving compliments from everyone and many people asking what product I am using. I will be purchasing more syringes soon!

Bottom Line: Yes, I would recommend this to a friend

Company Response from HiSmile

Nov 19, 2018

Hey Shyanne! Thanks for leaving your review, we really appreciate your feedback. Here at HiSmile, we want all our customers to experience amazing results without any pain or sensitivity, so we are so pleased to hear you received this! Welcome to the HiSmile fam!

Helpful Review? 4 People Have Voted
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