You've probably seen the purple toothpaste all over social media. HiSmile teeth whitening products have gained massive popularity through influencer partnerships and bold promises of a brighter smile. But with countless whitening options competing for your attention, it's worth asking whether this brand actually delivers results, or if it's mostly marketing hype.
Before you spend your money, you deserve straight answers about what actually whitens teeth and what might just lighten your wallet. At Remi, we develop oral care products alongside dental professionals, including our own teeth whitening foam, so we know what separates effective formulas from empty promises. That perspective shapes how we evaluate other products on the market.
This review examines HiSmile's full product lineup, breaks down the ingredients, and gives you an honest look at real customer experiences. We'll cover safety concerns, compare results to expectations, and help you decide whether HiSmile deserves a spot in your routine, or if better options exist for your whitening goals.
1. Remi night guard cleaning and teeth whitening foam
Before diving into HiSmile teeth whitening options, we want to be transparent about our own product. Remi developed this dual-purpose foam with dental professionals to solve two common problems: keeping night guards clean and brightening teeth over time. This formula uses peroxide-based whitening agents combined with cleaning compounds that remove bacteria and plaque from dental appliances.
How it works
You apply the foam directly to your night guard or retainer, then place it in your mouth as usual. The formula works while you sleep, whitening your teeth and sanitizing your dental appliance simultaneously. The active ingredients break down surface stains through oxidation, similar to professional whitening treatments but at a gentler concentration designed for overnight use.
Results and how long they last
Most users notice visible whitening within two to three weeks of consistent nightly use. The gradual approach means results develop slowly but steadily, typically reaching full effect after about a month. Your results last as long as you continue using the foam, with maintenance requiring less frequent application once you reach your desired shade.
Because the whitening happens gradually during your normal night guard routine, you don't need to add extra steps to your day.
Safety and sensitivity notes
The formula contains lower peroxide concentrations than most whitening strips, which reduces sensitivity risk. Your night guard creates a controlled barrier between the foam and your gums, minimizing irritation. If you experience sensitivity, you can skip nights or reduce frequency without losing progress.
Who it fits best
This product serves night guard wearers who want to whiten teeth without adding another product to their routine. You get the most value if you already wear a dental appliance nightly, turning that time into dual-purpose treatment.
Typical cost and where to buy
Remi sells this foam at $19.99 per bottle, with each bottle lasting approximately one month. You can purchase directly from the Remi website, often with bundle discounts when you buy multiple bottles or combine it with other products.
2. HiSmile PAP+ teeth whitening strips
HiSmile teeth whitening strips represent the brand's flagship product line, using PAP (phthalimidoperoxycaproic acid) instead of traditional hydrogen peroxide. These strips come individually wrapped and stick directly to your teeth for 30-minute sessions. The brand positions these as a gentler alternative to conventional whitening strips, claiming they deliver results without causing the sensitivity associated with peroxide-based products.
How it works
You apply the strips to your upper and lower teeth once daily for 30 minutes. PAP works by breaking down surface stains through oxidation without penetrating enamel as deeply as hydrogen peroxide. The strips conform to your tooth shape using a thin adhesive layer that keeps the formula in contact with enamel throughout the treatment.
Results and how long they last
Most users report visible whitening after six to eight applications, with full results appearing after completing the 14-day treatment cycle. Your teeth typically maintain their brighter shade for three to six months, depending on your diet and oral hygiene habits.
Safety and sensitivity notes
PAP creates less tooth sensitivity than traditional peroxide strips because it doesn't dehydrate enamel. You can use these strips even if you experience sensitivity with other whitening products, though some users still report mild discomfort.
Who it fits best
These strips work best for people with mild to moderate surface staining who want gradual whitening without professional treatment costs.
Typical cost and where to buy
HiSmile sells their PAP+ strips for approximately $40 per box containing 14 treatments, available through their official website and select retailers.
3. HiSmile V34 color corrector serum
The V34 color corrector takes a completely different approach from traditional HiSmile teeth whitening products. Instead of removing stains, this purple serum uses color theory to neutralize yellow tones in your teeth. You apply the water-based formula directly to your teeth, where the purple pigments counteract yellow discoloration by creating an optical brightening effect. This product gained viral attention on social media for its immediate visual results.
How it works
The purple pigments in the serum cancel out yellow tones through color correction rather than actual whitening. You brush the formula onto your teeth and let it sit for a few seconds before removing it, creating an instant brightening effect that lasts several hours.
Results and how long they last
Your teeth appear noticeably brighter immediately after application, but the effect fades within four to six hours. This product provides temporary cosmetic enhancement rather than permanent whitening, requiring reapplication before events or photos.
Safety and sensitivity notes
The formula contains no whitening agents, making it safe for sensitive teeth. Since it only coats your enamel with pigments, you avoid the chemical reactions that cause sensitivity with peroxide products.
Who it fits best
This serum works best for people wanting quick cosmetic enhancement before events or photos without committing to multi-day whitening treatments.
The purple tint creates an instant brightening effect, but you need to reapply regularly to maintain the appearance.
Typical cost and where to buy
HiSmile sells the V34 serum for approximately $30, available through their official website and select beauty retailers.
4. Dentist-supervised take-home whitening trays
Your dentist creates custom-fitted trays from impressions of your teeth, then provides professional-grade whitening gel for home use. This option bridges the gap between over-the-counter products like HiSmile teeth whitening and full in-office treatments, giving you professional strength results with the convenience of treating yourself at home. The custom fit ensures even coverage and prevents gel from irritating your gums.
How it works
You fill your custom trays with prescription-strength whitening gel (typically 10-20% carbamide peroxide) and wear them for specified periods, usually 30 minutes to overnight. Your dentist provides detailed instructions based on your sensitivity level and whitening goals.
Results and how long they last
Most people see dramatic whitening within one to two weeks of consistent use. Your results typically last one to three years, especially with good oral hygiene and occasional touch-up treatments.
Safety and sensitivity notes
Your dentist monitors your progress and adjusts gel concentration if sensitivity occurs. The custom trays prevent gel contact with gums, reducing irritation risk significantly.
Professional supervision means you get prescription-strength whitening with built-in safety monitoring.
Who it fits best
This option serves people wanting professional-level results without multiple office visits or the higher cost of in-office treatments.
Typical cost and where to buy
Dentists charge $200 to $500 for custom trays plus initial gel supply, available only through dental offices.
5. In-office professional teeth whitening
In-office whitening delivers the most dramatic results in the shortest time compared to products like HiSmile teeth whitening. Your dentist applies high-concentration bleaching agents directly to your teeth during a single appointment, using professional equipment and protective measures that only licensed practitioners can access. This method represents the fastest path to significant whitening when you need immediate results for an important event.
How it works
Your dentist protects your gums with a barrier gel or rubber shield, then applies professional-grade bleaching solution containing 25-40% hydrogen peroxide to your teeth. They activate the solution with special LED lights or lasers, accelerating the whitening process during your appointment.
Results and how long they last
You walk out with teeth several shades whiter after just one session. Your results typically last one to three years with proper maintenance and occasional touch-ups.
Professional whitening delivers the most dramatic shade change in a single appointment.
Safety and sensitivity notes
Your dentist monitors the entire process, adjusting treatment intensity if you experience discomfort. Most offices provide desensitizing treatments before or after the procedure to minimize sensitivity.
Who it fits best
This option suits people wanting maximum whitening in minimal time, particularly before weddings or major events.
Typical cost and where to buy
Dentists charge $500 to $1,000 per session, available only through dental offices.
The bottom line
HiSmile teeth whitening products deliver visible results for people with mild to moderate surface stains, though they fall short of professional treatments in both speed and dramatic shade change. The PAP+ strips reduce sensitivity concerns compared to traditional peroxide products, while the V34 serum provides instant optical brightening for temporary enhancement. Your choice ultimately depends on your whitening goals, budget, and sensitivity level.
Professional treatments offer more dramatic results but come with higher costs and potential sensitivity. Over-the-counter options like HiSmile provide a middle ground between drugstore strips and dental office treatments, making them a reasonable choice if you want gradual improvement without professional supervision.
If you already wear a night guard, you might skip single-purpose whitening products entirely. Our night guard cleaning and teeth whitening foam combines dental appliance sanitation with gradual whitening, turning your existing routine into dual-purpose treatment without adding extra steps to your day.
