The Non-Financial Ledger: What This Cost Families

Picture a Tuesday night in San Marcos, California. A mom named Amber has just finished the tooth-brushing fight with her two-year-old daughter. She pulls out the bottle of Hello Kids Wild Strawberry Rinse, the one with the cheerful label, the one she found at Walmart. The label says “naturally friendly.” It says “thoughtfully formulated.” It says the liquid has no alcohol, no dyes, no artificial flavors. It says, in the playful tone of a children’s brand that has figured out exactly how to speak to parents who are just trying to do right by their kids: “no brainer.”

She had no reason to doubt any of that. She did not have a medical degree. She was not cross-referencing the FDA’s Code of Federal Regulations. She was a parent standing in a Walmart aisle making a quick decision, exactly the kind of decision the Ninth Circuit and Seventh Circuit have both recognized that consumer protection law is designed to protect. The label worked on her. It worked exactly as it was designed to work.

What Amber did not know — what Hello Products chose not to tell her — is that the FDA explicitly says this product “should not be within easy reach of any children.” That it is contraindicated for children under 6. That the same body of science that governs what goes on that label has known since 1960 that fluoride mouthrinse must not be used by preschool-age children. That Colgate-Palmolive, the corporation that owns Hello Products, publishes a page on its own website warning parents that “babies and toddlers should not use mouthrinse” because swallowing it can cause “vomiting, intoxication, and nausea.”

She gave it to her daughter starting at age two. She kept buying it. Her daughter liked the taste. Of course she did. It was designed to taste like wild strawberry. That was the whole point.

In Rockford, Illinois, Josh Cook was doing the same thing for his three-year-old daughter Z.C. starting in 2021. In Manhattan, New York, Marina Vasilyeva was doing it for her three-year-old daughter C.B. also starting in 2021. None of them were directed by a doctor or dentist. All of them relied on the packaging. All of them trusted “naturally friendly.” All of them were deceived.

The children in those customer reviews that Hello Products hosted on its own website tell the full story of what this marketing actually accomplished. A parent wrote: “My 4 year old son’s new favorite treat is Hello Wild Strawberry Rinse.” Another wrote: “My 5 year old asks every night now if he can swish.” One parent described their child spitting it out and saying “Yummmm!” Another reported their child reminded them to open the mouthwash if they forgot. A parent of a 2-year-old, a 4-year-old, and a 6-year-old reported that all three “looked forward to using it every day.”

That is what success looks like for this product. A toddler who treats a fluoride drug as a nightly treat. A kid who asks for it. A 5-year-old with sensory processing disorder whose parent was relieved it didn’t burn his mouth, so he said “Yum!” and swallowed it. Hello Products put those reviews on their website because they were good for business. They were the proof of concept. The candy flavor worked. The children wanted more.

The harm does not announce itself with a dramatic emergency room visit. It shows up years later. Dental fluorosis, the permanent hypomineralization of developing tooth enamel, is visible on the front teeth of children who ingested too much fluoride in their first three years. The mild form leaves white streaks. The moderate form leaves brown, gray, or black patches and pitting. Studies document children being bullied by peers over the appearance of their teeth. Children who become reluctant to smile. Children whose parents report strong dissatisfaction with the color and blotchiness of their teeth. Families who cannot afford the veneers or abrasion treatments needed to correct what the fluoride did.

The fluorosis rate among U.S. schoolchildren was 23% in 1986-87. By 2015-16, it had climbed to 68%. That is the context in which Hello Products decided it was a good time to launch a candy-flavored fluoride rinse marketed directly to the preschool demographic.

The betrayal here is not abstract. It is a parent who trusted a label, a child who liked a flavor, and a corporation that knew exactly what it was doing and built a business model out of the gap between what it said and what it knew.

Legal Receipts: What the Documents Actually Say

The following are verbatim quotes from the court filing, federal regulations, and government agency records cited in the complaint. Each one proves something specific about the gap between what Hello Products sold and what every relevant scientific and regulatory authority has known for decades.

“Children under 6 years of age . . . have not developed control of their swallowing reflex and are not able to hold the fluoride preparation in their mouth and then expectorate properly.” U.S. Food and Drug Administration, 59 Fed. Reg. 39854, 39867 (Sept. 30, 1985)

• This proves the FDA has known for at least 40 years that children under 6 physically cannot avoid swallowing mouthrinse, regardless of instructions. Hello Products sold the product to this exact age group with zero acknowledgment of this fact.
• The candy flavoring, per the complaint’s own evidence, increases swallowing further: children are known to “swallow toothpaste deliberately when they like its taste.” A product engineered to taste like strawberry candy compounds the already-documented swallowing reflex problem.

“The use of flavored consumer fluoride products increases the possibility that a child will ingest a toxic dose of fluoride.” Jay D. Shulman & Linda M. Wells, Journal of Public Health Dentistry, 57 J PUBLIC HEALTH DENT. 150, 150 (1997)

• This was published 28 years before the lawsuit was filed. The scientific community had already specifically flagged candy-flavored fluoride products as a toxicity vector for children. Hello Products launched and expanded its candy-flavored children’s rinse into this documented risk environment.
• The complaint also cites a 2014 Journal of Dental Hygiene review stating that pictures of fruit on kids fluoride products are “misleading” because they send a “common signal to a child that the product is intended to be consumed as if it were food.” Hello Rinse uses exactly this kind of fruit imagery.

“The following statement shall be prominently placed on the principal display panel: ‘IMPORTANT: Read directions for proper use.'” 21 C.F.R. § 355.55 — FDA Regulation, Anticaries Drug Products for OTC Human Use Final Monograph

• This is a hard legal requirement, not a recommendation. “Shall be prominently placed” has no ambiguity. Hello Products does not include this notice anywhere on the label, prominently or otherwise. This is a straightforward regulatory violation.
• The FDA’s explicit reasoning for requiring this notice is documented in the same federal register: consumers may misuse fluoride mouthrinse because they are familiar with cosmetic mouthrinses and will not appreciate that fluoride mouthrinse is a drug with different safety requirements. Hello Products’ labeling actively reinforces that misunderstanding.

“Keep out of reach of children. If more than used for rinsing is accidentally swallowed, get medical help or contact a Poison Control Center right away.” 21 C.F.R. § 355.50(c)(2) — Required poison warning for all fluoride mouthrinse products, first sentence in bold type

• The FDA mandates this warning specifically because of documented poison control reports. The complaint confirms over 4,000 annual poison control reports related to fluoride mouthrinse ingestion by young children, and researchers acknowledge this number “underestimates” actual incidents due to substantial underreporting.
• Hello Products includes this warning in fine print on the back label, in low-contrast, sometimes blurry text at the bottom of a label whose top half is dominated by large, bold promotional language. The complaint documents this design choice as a calculated suppression of the required warning’s prominence.

“Babies and toddlers should not use [fluoride] mouthrinse because children under six may not have fully developed their swallowing reflexes and could swallow the mouthrinse, which can lead to side effects like vomiting, intoxication, and nausea.” Colgate-Palmolive Co. website, “What Parents Should Know About Mouthwash for Children” (last accessed Jan. 13, 2025) — Colgate is Hello Products’ parent company

• This is Colgate-Palmolive, the corporate parent of Hello Products, publishing guidance that directly contradicts the marketing strategy of its own subsidiary. Colgate tells parents on its website not to give toddlers fluoride mouthrinse. Hello Products markets candy-flavored fluoride mouthrinse to toddler-age consumers.
• This demonstrates that the knowledge of harm existed at the highest level of the corporate structure. The subsidiary’s deceptive marketing cannot be attributed to ignorance. The parent company had already documented and published the exact risks the subsidiary was concealing from buyers.

• This judicial standard is directly relevant: a parent picking up Hello Rinse at Walmart is not expected to know FDA regulations, cross-reference the back label fine print, or know that the ADA seal on the front applies only to children 6 and older. The front label’s deception is the actionable act, regardless of what is buried in the small print.

Societal Impact Mapping: Who Pays for This

Public Health

The documented harms from early childhood fluoride mouthrinse exposure operate across multiple body systems and age ranges, from the immediate to the lifelong.

• A 2-year-old of average weight (~12 kg) who swallows a single 10 mL dose of Hello Rinse ingests 0.19 mg/kg of fluoride, more than twice the EPA’s reference dose of 0.08 mg/kg/day. EPA defines this threshold as the level above which children are at risk of “severe dental fluorosis.”
• Symptoms of nausea and gastrointestinal distress from fluoride ingestion have been documented at doses as low as 0.1 mg/kg. A 2-year-old reaches this level by swallowing just over half of a single dose. The mechanism: fluoride reacts with stomach acid to form hydrofluoric acid, which burns the gastric lining.
• A 1-year-old child of average weight (~9 kg) who drinks just 41% of a Hello Rinse bottle, and a 2-year-old (~12 kg) who drinks 55%, each exceed the Probable Toxic Dose of 5 mg/kg, defined as the threshold requiring immediate hospitalization due to risk of death. The bottle contains 109 mg of fluoride.
• Ingestion of as little as 1/3 of a single dose of Hello Rinse produces blood fluoride levels that approximate or exceed 0.1 mg/L, the level the National Research Council associates with impaired insulin production and disrupted glucose metabolism in children.
• The National Research Council also links excess fluoride exposure to thyroid dysfunction in susceptible individuals at doses as low as 0.01–0.03 mg/kg/day when iodine intake is inadequate. A 2-year-old reaches 0.03 mg/kg by ingesting just 1/6th of a single dose of Hello Rinse.
• In August 2024, the National Toxicology Program published a systematic review of 74 human studies finding a “dose-response relationship between fluoride measurements in urine and drinking water and children’s IQ.” The NTP specifically listed mouthwash as a source of excess childhood fluoride exposure that may contribute to neurodevelopmental harm.
• Dental fluorosis now affects 68.2% of U.S. children, up from 23% in 1986-87. The condition is permanent, caused during the first six years of life when teeth are still forming, and ranges from cosmetically objectionable white streaking to severe brown-black pitting. It cannot be reversed, only masked with expensive cosmetic procedures.
• Over 4,000 annual poison control reports are made for fluoride mouthrinse ingestion by young children. Researchers acknowledge this is an undercount due to “substantial underreporting.” Parents often attribute symptoms of mild fluoride toxicity, including nausea, diarrhea, and vomiting, to ordinary illnesses like stomach flu, because the symptoms are identical and they do not know the child ingested fluoride.

Economic Inequality

The financial damage from this product is not evenly distributed. It compounds for families with fewer resources at every stage.

• Parents who purchased Hello Rinse for children under 6 paid full retail price for a product the FDA considers contraindicated for that age group, meaning the product had no approved value for the primary customer they were buying it for. The lawsuit seeks restitution on exactly this basis.
• Dental fluorosis treatment, ranging from microabrasion for mild cases to porcelain veneers for severe ones, is a cosmetic procedure almost universally excluded from basic dental insurance plans. Families without disposable income cannot afford to correct the permanent enamel damage caused by the product. Their children carry visible, socially stigmatizing marks on their front teeth into adulthood.
• Multiple peer-reviewed studies document the psychosocial impact on children with fluorosis, including being subjected to “unkind remarks” from peers about their teeth, reluctance to smile, and “lack of confidence.” These effects are concentrated in children from families who could not afford to correct the damage, creating a class-stratified burden of the harm.
• The class action covers California, Illinois, and New York, with at least 100 class members and over $5,000,000 in aggregate controversy. The product was sold at Walmart, a retail channel that disproportionately serves lower-income households, meaning a significant share of the deceived parents were among those least able to absorb financial loss or fund corrective dental care.
• The complaint does not seek personal injury damages, only economic restitution for the purchase price. This means families whose children suffered direct health harm from swallowing the product may have separate pathways to recover costs that this class action does not cover, adding complexity and cost burden to harmed households.

The Gap Between the Label and the Law

The “Cost of a Life” Metric

What Now? Who Is Accountable and What You Can Do

The lawsuit is filed. The regulatory record is documented. Here is the chain of accountability and where pressure can be applied right now.

Named Defendant and Corporate Structure

• Hello Products LLC — Defendant. Delaware LLC with principal place of business in North Bergen, New Jersey. Manufacturer and seller of Hello Kids Fluoride Rinse. Case No. 3:25-cv-00071-AGS-BLM, U.S. District Court, Southern District of California.
• Colgate-Palmolive Co. — Parent company of Hello Products. Not named as a defendant in this complaint, but cited directly as the source of guidance that “babies and toddlers should not use mouthrinse.” The knowledge existed at the parent-company level while the subsidiary marketed the opposite.

Watchlist: Regulatory Bodies That Can Act

• U.S. Food and Drug Administration (FDA): The agency that issued the violated regulations (21 C.F.R. §§ 355.50 and 355.55) and has authority to enforce labeling requirements and initiate misbranding actions. The FDA’s own research and publications are cited throughout this lawsuit as confirmation that Hello Products violated federal law. Contact: fda.gov/safety/report-a-problem
• Federal Trade Commission (FTC): Has authority over deceptive advertising practices targeting consumers. A product marketed as “naturally friendly” and “thoughtfully formulated for kids” that is federally contraindicated for the marketed age group is precisely the kind of deceptive trade practice the FTC polices. Contact: reportfraud.ftc.gov
• California Department of Consumer Affairs / California Attorney General: The UCL (Cal. Bus. & Prof. Code § 17200) claims in this lawsuit are California state law claims. The state AG has independent authority to pursue enforcement actions against deceptive business practices under the same statute.
• Illinois Attorney General: The ICFA (815 ILCS 505) claims in this lawsuit run through Illinois. The Illinois AG can independently investigate and prosecute violations of the Consumer Fraud and Deceptive Trade Practices Act.
• New York Attorney General: The NY GBL §§ 349-350 claims involve New York. The NYAG has a Consumer Frauds and Protection Bureau with authority to act on exactly this type of false advertising claim.

Practical Steps: Mutual Aid and Local Organizing

• If you purchased Hello Kids Fluoride Rinse for a child under 6 in California, Illinois, or New York without a doctor’s recommendation: You may be a class member. Contact the plaintiff’s counsel at Siri & Glimstad LLP (sirillp.com, Tel: 888-747-4529) to understand your options.
• Stop using the product immediately if you have it and your child is under 6. The FDA, WHO, ADA, AAP, and CDC all agree it is contraindicated for this age group. Consult your pediatric dentist about appropriate fluoride use for your child’s age.
• Talk to other parents in your community: This product was sold at Walmart and is widely distributed. Many parents who bought it have no idea the FDA considers it too dangerous for young children. Share this reporting.
• File a consumer complaint with the FDA’s MedWatch if your child experienced nausea, vomiting, or gastrointestinal symptoms after using Hello Rinse. These reports contribute to the poison control database that regulators use to justify enforcement action. fda.gov/safety/medwatch
• Engage local pediatric and dental health advocacy organizations: The AAP and ADA already have official positions opposing under-6 fluoride mouthrinse use. Local chapters of these organizations can push for stronger retail controls and point-of-sale warnings on products like Hello Rinse.
• If your child shows dental fluorosis: Document it photographically, speak to your dentist, and consult with legal counsel about options outside the scope of this class action, which covers economic harm from purchase only and does not include personal injury claims.