The HiSmile lawsuit has become one of the more closely watched consumer protection cases in the oral care industry heading into 2026. Consumers across the U.S., Australia, and the UK are raising serious legal questions about whether this wildly popular teeth whitening brand delivered on its promises or built a billion-dollar empire on misleading claims.
At the center of the dispute are allegations of false advertising, undisclosed influencer partnerships, questionable ingredient safety claims, and pricing practices that left customers feeling deceived.
This article breaks down everything you need to know. You’ll find out what the allegations are, which products are affected, whether you qualify for compensation, and exactly how to take action if you’ve been affected.
One fast fact before we get into it: HiSmile generated over $100 million in revenue largely through social media influencer marketing, which is exactly where much of the legal trouble starts.
What Is the HiSmile Lawsuit?
The HiSmile lawsuit refers to a growing body of legal complaints and regulatory actions against HiSmile Pty Ltd, an Australian-founded direct-to-consumer teeth whitening brand.
HiSmile was founded in 2014 by Alex Tomic and Nik Mirkovic in Brisbane, Australia. The brand exploded globally through celebrity endorsements and influencer marketing deals with names like Kylie Jenner, Conor McGregor, and dozens of social media personalities.
The legal issues involve several distinct problems. First, consumers claim the products don’t work as advertised. Second, regulators flagged issues with how influencer promotions were disclosed. Third, ingredient transparency has been challenged in multiple jurisdictions.
| Core Claim | Details |
|---|---|
| False Advertising | Products marketed as dramatically whitening teeth without sufficient scientific backing |
| Influencer Disclosure | Paid promotions not clearly labeled as sponsored content |
| Ingredient Safety | Questions about PAP and other active ingredients’ long-term safety |
| Regulatory Actions | Complaints filed with ASB in Australia and FTC inquiries in the U.S. |
| Consumer Refund Disputes | Customers denied refunds despite receiving products they claim didn’t work |
This is not a single filed class action with a court date set. It is a collection of consumer complaints, regulatory findings, and ongoing legal pressure that is building toward formal class action filings in 2026.
HiSmile Class Action Lawsuit 2026: What’s Happening Now
As of 2026, HiSmile faces mounting pressure that legal experts expect will crystallize into formal class action filings in U.S. federal court.
Consumer protection attorneys have been collecting client statements from HiSmile customers since 2023. The volume of complaints across platforms like the Better Business Bureau and consumer advocacy sites has crossed thresholds that typically trigger class certification motions.
The class action theory is straightforward. Hundreds of thousands of consumers purchased HiSmile products based on advertising claims that the brand cannot substantiate with clinical evidence. When one deceptive act harms enough people the same way, class action is the legal tool built for exactly that situation.
| Status | Details |
|---|---|
| Current Stage | Pre-certification, complaint aggregation phase |
| Jurisdiction | U.S. Federal Court (expected); Australian Federal Court |
| Class Size Estimate | Potentially hundreds of thousands of consumers |
| Year Filed / Expected | Formal filings expected mid-to-late 2026 |
| Lead Law Firms | Multiple consumer protection firms currently investigating |
Think of this phase like the early stages of the Fitbit fitness tracker lawsuits. Before those went to court, attorneys spent months collecting complaints and documenting patterns. HiSmile appears to be at that exact stage right now.
Key legal theory being developed: Violations of consumer protection statutes across multiple states, including California’s Unfair Competition Law and various state consumer fraud acts.
HiSmile False Advertising Lawsuit: The Core Allegations
The false advertising claim is the backbone of the HiSmile lawsuit, and it’s the one most likely to survive a motion to dismiss.
HiSmile’s marketing consistently promised dramatic whitening results. Their ads showed before-and-after images implying multiple shades of whitening improvement from a single use or a short treatment period. The problem is that independent dental researchers and consumer testing groups found results that were far less dramatic than what was shown.
Under the FTC Act and similar statutes in Australia and the UK, advertising claims about product performance must be backed by competent and reliable scientific evidence. Dramatic visual claims trigger a high evidentiary standard.
| Advertising Claim | Legal Problem |
|---|---|
| “Whiten teeth in just 10 minutes” | Not supported by peer-reviewed clinical data |
| Before/After visuals showing dramatic change | Images may have been altered or taken under optimized lighting |
| “Dentist-approved” language | Vague and not tied to specific clinical endorsements |
| “Safe for enamel” claims | No independent long-term enamel safety studies submitted |
Consumers who purchased HiSmile products specifically because of these claims have a potential false advertising claim under their state or national consumer protection laws.
The core question courts will ask: Did HiSmile know, or should it have known, that these claims were not supported by adequate evidence before publishing them?
HiSmile Influencer Marketing Lawsuit: The Disclosure Problem
The influencer marketing piece of the HiSmile lawsuit may be the most publicly damaging allegation the brand faces.
HiSmile built its entire brand on social media endorsements. Celebrities and influencers posted content featuring HiSmile products to audiences of millions. The FTC requires that paid partnerships be clearly and conspicuously disclosed. The standard is not a small hashtag buried at the bottom of a caption. The disclosure must be impossible to miss.
Multiple HiSmile influencer posts from 2018 through 2023 lacked proper disclosure. Some used vague tags like “#ad” hidden among 15 other hashtags. Others had no disclosure at all despite the influencer receiving free product or payment.
| Platform | Disclosure Standard Required | HiSmile Practice Alleged |
|---|---|---|
| Clear “#ad” or “#sponsored” at start of caption | Buried disclosures or none | |
| YouTube | Verbal disclosure and pinned description note | Verbal disclosure often omitted |
| TikTok | On-screen text overlay, not hidden | Inconsistent application |
| “Paid Partnership” tag required | Not always applied |
Consumers who purchased after seeing undisclosed influencer content may have a deceptive trade practices claim. The legal theory: they were deceived into thinking an organic recommendation was genuine when it was paid promotion.
The FTC has already signaled in multiple enforcement actions that influencer non-disclosure is not a technical paperwork problem. It is consumer fraud.
HiSmile FTC Investigation: What Federal Regulators Found
The FTC’s interest in HiSmile stems from the broader crackdown on influencer marketing practices in the direct-to-consumer space.
The FTC updated its endorsement guidelines in 2023, making it even clearer that brands are responsible for ensuring their influencer partners comply with disclosure rules. Brands cannot simply say “we told the influencer to disclose” and walk away. If the disclosure is inadequate, the brand shares liability.
HiSmile operates in the U.S. market through its U.S. website and ships to American consumers. That means it falls squarely within FTC jurisdiction regardless of its Australian headquarters.
| FTC Enforcement Area | Relevance to HiSmile |
|---|---|
| Endorsement Guidelines (2023 update) | Requires clear, conspicuous disclosures for all paid content |
| Performance Claims | Brands must have scientific substantiation before making efficacy claims |
| Consumer Redress | FTC can seek refunds for consumers as part of enforcement actions |
| Civil Penalties | Up to $50,120 per violation for knowing violations |
As of 2026, the FTC has not issued a public enforcement action specifically naming HiSmile. However, consumer protection attorneys investigating the brand are tracking FTC correspondence closely, and any enforcement action would significantly strengthen private class action claims.
Key point: FTC investigations often run quietly for months before going public. The absence of a press release does not mean no investigation exists.
Key Takeaway: The combination of false advertising allegations, influencer disclosure failures, and FTC scrutiny creates three separate legal pressure points on HiSmile simultaneously.
HiSmile Ingredients Lawsuit: What’s Actually in These Products?
The ingredients in HiSmile products have drawn legal attention because of what the brand claims about them versus what independent researchers say.
HiSmile’s primary active whitening agent is PAP, or Phthalimidoperoxycaproic Acid. The brand marketed PAP as a revolutionary, safe, and equally effective alternative to hydrogen peroxide. That is a significant claim. And it is one that requires strong clinical evidence.
Independent dental researchers have published findings suggesting that PAP’s whitening efficacy is not equivalent to peroxide-based systems for most users. If HiSmile represented PAP as superior or equivalent without adequate clinical backing, that is a potential misrepresentation under consumer protection law.
| Ingredient | HiSmile’s Claim | Independent Research Finding |
|---|---|---|
| PAP (Phthalimidoperoxycaproic Acid) | Safe, effective, peroxide-free whitening | Limited peer-reviewed studies; efficacy varies significantly |
| Potassium Citrate | Reduces sensitivity | Some evidence supports this, but long-term data limited |
| Hydroxyapatite | Enamel-strengthening | Promising but not universally accepted as definitive |
| Fluoride | Not present in many products | Absence not always disclosed prominently |
Consumers who chose HiSmile because of specific ingredient safety or efficacy claims, and who then experienced disappointing results or unexpected side effects, have the clearest path to a product liability or false advertising claim grounded in ingredient misrepresentation.
HiSmile PAP Teeth Whitening Safety Concerns
PAP has been positioned as safer than hydrogen peroxide, but the safety picture is more complicated than HiSmile’s marketing suggests.
Hydrogen peroxide in teeth whitening products is regulated by dental authorities worldwide. PAP is newer, with a much thinner body of long-term safety research. The absence of long-term studies does not mean PAP is unsafe. But marketing it as definitively safer than a well-studied alternative raises serious questions.
Some consumers have reported gum irritation, increased tooth sensitivity, and soft tissue discomfort after using PAP-based HiSmile products. These are the same complaints historically associated with peroxide whitening, which undercuts HiSmile’s core differentiating safety claim.
- Gum irritation reported across multiple consumer complaint platforms
- Tooth sensitivity reported even with potassium citrate present
- Some users reported soft tissue burns from gel contact with gums
- No long-term enamel safety studies specific to HiSmile’s PAP formula published
If consumers experienced side effects that HiSmile’s marketing implied would not occur, that creates potential product liability exposure alongside the advertising claims.
The legal standard here is not whether PAP is inherently dangerous. It is whether HiSmile made safety representations that went beyond what the evidence supports.
HiSmile V34 Color Corrector Lawsuit: Specific Product Claims
The HiSmile V34 Color Corrector has generated its own wave of specific complaints that feed directly into the broader lawsuit narrative.
The V34 is not a traditional whitening product. It is a purple-tinted serum that works on color theory, using purple pigments to counteract yellow tones in teeth. HiSmile marketed it aggressively as a whitening product capable of delivering visible results immediately.
The problem is that V34 does not whiten teeth. It temporarily tints them with pigment. When consumers bought it expecting the same results as a whitening treatment, many felt deceived when the effects disappeared within hours of eating or drinking.
| V34 Claim | Reality |
|---|---|
| “Visibly whiter teeth” | Temporary tinting effect, not structural whitening |
| “Works instantly” | Pigment rinses away; not a permanent or lasting change |
| Marketed alongside whitening products | Created reasonable consumer expectation of whitening |
| No clear “temporary effect” disclosure | Many consumers didn’t realize the effect was cosmetic and transient |
Consumer complaints about V34 are significant in volume. Attorneys tracking HiSmile complaints have specifically flagged V34 as a product where the gap between marketing language and actual consumer experience is widest.
Key Takeaway: The V34 Color Corrector, PAP ingredient misrepresentations, and whitening strip complaints together form a multi-product pattern that strengthens the argument for class-wide deceptive marketing.
HiSmile Whitening Strips Lawsuit: Are the Strips Under Fire?
HiSmile’s whitening strips have also attracted complaints, though the strip-specific allegations are somewhat different from the gel and V34 claims.
The strips entered the market competing directly with established brands like Crest Whitestrips. HiSmile positioned them as more effective and gentler than peroxide-based competitor strips. Both claims have been challenged.
Consumers reported that the strips failed to adhere properly, slipped during treatment, and delivered minimal whitening despite following the instructions exactly. When customers sought refunds, many reported being denied or given store credit instead of cash refunds.
- Adhesion failures reported across multiple review platforms
- Whitening results described as minimal or unnoticeable by significant percentage of buyers
- Refund denial complaints filed with BBB and consumer protection agencies
- Pricing of strips ($45 to $65 per kit) made the disappointing results financially significant
The refund denial issue is particularly legally important. Refusing to honor refund requests for a product that failed to perform as advertised is itself a potential unfair trade practice in most U.S. states and under Australian consumer law.
HiSmile Complaints: What Customers Are Reporting
Consumer complaints against HiSmile form a consistent and legally significant pattern across multiple platforms.
The volume and consistency of complaints matters in class action law. When thousands of consumers independently report the same problems, that pattern is exactly the kind of evidence courts look at when deciding whether a class is certifiable.
The most common HiSmile complaints, based on aggregated consumer reporting, fall into these categories:
- Products not delivering advertised whitening results
- Tooth sensitivity and gum irritation during or after use
- Difficulty obtaining refunds or reaching customer service
- V34 tinting effect mistaken for whitening due to marketing framing
- Influencer recommendations that were not disclosed as paid partnerships
- Subscription billing disputes where customers claim they didn’t authorize recurring charges
| Complaint Category | Frequency | Legal Relevance |
|---|---|---|
| No whitening results | Very high | False advertising claim |
| Sensitivity and irritation | High | Product safety claim |
| Refund denied | High | Unfair trade practices claim |
| Undisclosed paid promotion | High | FTC disclosure violation |
| Unauthorized billing | Moderate | Consumer fraud claim |
Each of these categories represents a separate potential legal claim. Consumers who experienced more than one of these issues have stronger individual claims and strengthen the overall class action case.
HiSmile Australia Lawsuit and Regulatory Actions
Australia is where HiSmile was born, and Australian regulators have been among the first to take formal action against the brand.
The Australian Advertising Standards Bureau (ASB) received complaints about HiSmile’s advertising as early as 2019. Some complaints focused on whether the before-and-after images in HiSmile’s advertising were representative of typical consumer results. Others targeted the influencer disclosure practices.
Australian consumer law is governed by the Australian Consumer Law (ACL), which sits within the Competition and Consumer Act 2010. Under ACL, businesses cannot make misleading representations about goods, including representations about performance, effectiveness, or ingredients.
| Australian Regulatory Body | Relevant Jurisdiction | Action Taken |
|---|---|---|
| Australian Advertising Standards Bureau | Advertising standards compliance | Reviewed multiple complaints about HiSmile ads |
| Australian Competition and Consumer Commission (ACCC) | Consumer protection and false representation | Monitoring direct-to-consumer whitening brands |
| Therapeutic Goods Administration (TGA) | Products making health-adjacent claims | Potential jurisdiction over some whitening products |
Australian consumers have stronger automatic protections than their U.S. counterparts in some respects. Under ACL, consumers have guaranteed rights to a remedy if a product fails to match its description or doesn’t do what it’s supposed to do. HiSmile’s Australian customers may have simpler paths to refunds through regulatory channels.
Key Takeaway: Australian regulatory actions against HiSmile create a documented record of problematic advertising that U.S. class action attorneys can reference when building their cases.
Who Qualifies for the HiSmile Lawsuit?
You may qualify for the HiSmile lawsuit if you purchased HiSmile products and experienced one or more of the issues at the center of the legal complaints.
Eligibility is not final until a class is certified by a court. But based on the current legal theories being developed, the following profile describes who is most likely to be included:
You likely qualify if:
- You purchased any HiSmile product in the U.S., Australia, UK, or Canada
- You purchased between 2018 and 2026 (the period covered by most advertising complaints)
- You experienced little to no whitening results despite following product instructions
- You purchased after seeing an influencer post that was not disclosed as paid advertising
- You experienced sensitivity, gum irritation, or other side effects the brand implied would not occur
- You were denied a refund for a product that failed to perform
| Eligibility Factor | Qualifies | May Not Qualify |
|---|---|---|
| Purchase date | 2018 to 2026 | Before 2018 |
| Product type | Whitening gel, V34, strips, whitening pen | Toothpaste only (less advertising scrutiny) |
| Harm experienced | No results, side effects, refund denied | Satisfied with results |
| Location | U.S., Australia, UK, Canada | Outside these jurisdictions |
| Proof of purchase | Receipt, email confirmation, bank statement | No purchase record |
You don’t need a lawyer to check eligibility. But consulting with a consumer protection attorney handling HiSmile claims is the fastest way to confirm whether your situation fits.
HiSmile Lawsuit Payout and Settlement Amounts
No final settlement amounts have been announced for the HiSmile lawsuit as of 2026, but comparable consumer protection settlements give a reasonable range to expect.
In false advertising class actions for consumer products priced between $20 and $80, individual consumer payouts typically fall between $25 and $300 per claimant, depending on how many products were purchased and whether physical harm was documented.
Consumers who experienced documented side effects, such as gum damage or tooth sensitivity that required dental treatment, may be eligible for individual claims outside the class settlement with potentially higher payouts.
| Claim Type | Estimated Payout Range |
|---|---|
| Basic false advertising (no physical harm) | $25 to $75 per product purchased |
| Multiple product purchases | $75 to $200 total |
| Physical harm (sensitivity, gum irritation) | $200 to $500+ depending on documentation |
| Dental treatment required | Individual claim, potentially $1,000+ |
| Undisclosed influencer claim | Included in base class payout |
These are estimates based on comparable settlements. They are not guaranteed amounts. The final payout depends on the total number of claimants, the court-approved settlement fund, and the strength of individual documentation.
The more proof you have, the better. Save every receipt, screenshot, and photo of your results.
HiSmile Settlement 2026 Updates
The HiSmile settlement situation in 2026 is still developing, and the timeline for a final resolution depends heavily on whether formal class action filings proceed in the first half of the year.
If a class action complaint is filed and a class is certified, the typical timeline runs 18 to 36 months from filing to settlement. That would put a potential settlement payment date between 2027 and 2028 if filings happen in 2026.
However, brands under legal pressure sometimes prefer to settle early before class certification, which can accelerate the timeline significantly. HiSmile has significant financial resources and reputational incentives to resolve consumer claims without a prolonged court battle.
| Settlement Phase | Expected Timing |
|---|---|
| Class action filing | Mid-to-late 2026 (estimated) |
| Class certification motion | 2026 to 2027 |
| Discovery and negotiation | 2027 |
| Preliminary settlement agreement | Late 2027 to early 2028 |
| Claims filing period | 2028 (estimated) |
| Settlement payments | 2028 or later |
Check legal news sources and consumer protection agency websites periodically for updates. Settlement websites are typically created after court approval, not before.
Key Takeaway: While settlement payments are still likely years away, filing your information with investigating law firms now preserves your spot in the class and protects your ability to claim compensation later.
HiSmile Refund and Compensation Options
You don’t have to wait for a class action settlement to seek compensation from HiSmile. Several immediate options exist.
The first option is a direct refund request through HiSmile’s customer service. While many consumers report difficulty getting refunds, a formal written request citing specific product failures and consumer protection law creates a paper trail that supports later legal claims.
The second option is a chargeback through your credit card company or PayPal. If you paid for a product that didn’t perform as advertised, many card issuers will initiate a chargeback dispute. Document everything before calling.
| Compensation Route | Timeline | Success Rate |
|---|---|---|
| HiSmile direct refund request | 1 to 4 weeks | Moderate (depends on documentation) |
| Credit card chargeback | 30 to 90 days | High if purchased within 120 days |
| PayPal buyer protection | 45 to 180 days | Moderate |
| State attorney general complaint | Varies | Builds regulatory pressure |
| Class action claim (when available) | 2 to 4 years | Depends on settlement outcome |
| Individual attorney demand letter | 30 to 90 days | High for documented physical harm cases |
Filing a complaint with your state attorney general’s consumer protection division costs nothing. It contributes to the regulatory pressure that often motivates brands to settle faster.
For consumers who experienced dental treatment costs related to HiSmile side effects, speaking with a personal injury or consumer protection attorney about an individual claim is worth the time. Many take these cases on contingency, meaning you pay nothing unless you win.
How to File a HiSmile Lawsuit Claim
Filing a HiSmile claim is a multi-step process, but none of it is legally complex at the consumer level.
The first thing to do right now is gather your documentation. You need proof that you bought the product and proof of the problem you experienced.
Documentation to collect immediately:
- Order confirmation emails from HiSmile or your retailer
- Bank or credit card statements showing the purchase
- Photos of the product and, if applicable, your teeth before and after use
- Screenshots of the advertising or influencer post that influenced your purchase
- Records of any customer service communications with HiSmile
- Medical or dental records if you experienced side effects requiring treatment
Once you have your documentation, take these steps:
Step 1: Contact a consumer protection law firm investigating HiSmile claims. Many offer free consultations and work on contingency. They will assess whether your situation qualifies.
Step 2: File a complaint with the FTC at ReportFraud.ftc.gov (for U.S. consumers). This strengthens the regulatory record and costs nothing.
Step 3: File a complaint with your state attorney general’s consumer protection office. Each state has one.
Step 4: If you’re in Australia, file with the ACCC or your state’s fair trading office.
Step 5: Register your information with any official settlement website once one is created after court approval.
| Action | Who Does It | Cost |
|---|---|---|
| Gather documentation | You | Free |
| Contact investigating law firm | You | Free (contingency basis) |
| File FTC complaint | You | Free |
| File AG complaint | You | Free |
| File class action claim (when available) | Attorney handles | Free to consumer |
The single biggest mistake people make in class action situations is waiting. Claims have deadlines. The statute of limitations for consumer fraud typically runs 2 to 4 years from the date of purchase or discovery of the harm, depending on your state. Don’t let that clock run out.
Frequently Asked Questions
Is there an active HiSmile class action lawsuit in 2026?
An active class action filing against HiSmile is in development as of 2026.
Consumer protection attorneys are aggregating complaints and preparing filings in U.S. federal court.
A formal class certification is expected to be sought in mid-to-late 2026.
Who qualifies for the HiSmile lawsuit or settlement?
Consumers who purchased HiSmile products between 2018 and 2026 and experienced false advertising, product failures, or undisclosed influencer promotions likely qualify.
You don’t need a receipt, but any proof of purchase strengthens your claim.
U.S., Australian, UK, and Canadian consumers are all potentially eligible under their respective consumer protection laws.
How much money can I get from a HiSmile lawsuit settlement?
Most class action claimants in comparable consumer product cases receive between $25 and $300 per claim.
Consumers with documented physical harm, like dental treatment costs, may qualify for higher individual compensation.
Final amounts depend on the total class size, settlement fund, and the strength of your individual documentation.
What products are included in the HiSmile lawsuit?
The whitening gel kits, V34 Color Corrector, whitening strips, and whitening pens are all at the center of consumer complaints.
The V34 Color Corrector has attracted particularly heavy scrutiny for marketing a temporary tinting effect as whitening.
Toothpaste and non-whitening HiSmile products have received less legal attention.
How do I file a claim against HiSmile?
Start by collecting your purchase records, product photos, and any communications with HiSmile customer service.
Then contact a consumer protection law firm investigating HiSmile, file a complaint with the FTC at ReportFraud.ftc.gov, and file with your state attorney general’s office.
When an official settlement website is created after court approval, you’ll file your formal claim there.
What Happens Next
The HiSmile lawsuit is real, it’s building, and 2026 is shaping up to be the year formal legal action moves from behind-the-scenes to public court filings.
If you bought HiSmile products and felt misled, start documenting your experience today. Save your receipts. Screenshot everything. Contact a consumer protection attorney.
The consumers who act now will be positioned to receive compensation. Those who wait may miss filing deadlines entirely. The clock is running
