Nathan & Sons (Underbrush) Official Remineralizing Gum Review
- design4663
- Oct 8
- 6 min read
Product Rating 4.7 stars out of 5 stars
Nathan and Sons Remineralizing Gum Review:
Introduction
Underbrush by Nathan & Sons has exploded in popularity for one big reason: it's a plastic-free gum made from tree saps, sweetened with xylitol, and fortified with nano-hydroxyapatite (n-HAp) to support enamel between brushes. Below you'll find what it is, how it tastes, what real buyers say on different platforms, where to buy safely, what dental professionals are saying, and what to watch out for.
Reviews
Nathan & Sons (Underbrush) Remineralizing Gum Etsy Reviews
The official Nathan & Sons Etsy shop tends to show consistent 5-star notes about the pleasant mint, nice texture, and helpful support when shipping hiccups happen. A common note is that flavor fades faster than big-brand gums, while the chew remains satisfying.
Source: https://www.etsy.com/listing/1488855022/official-nathan-sons-underbrush-gum
Nathan & Sons (Underbrush) Remineralizing Gum NathanandSons.com Website Reviews
On the brand's site, recurring themes are: "cleaner mouth," "polished feel," and some mentions of shorter flavor. If you prefer a natural, denser chew and care about ingredients over bubble-gum sweetness, you'll likely enjoy it.
Source: https://nathanandsons.com/pages/reviews
Shop.App review rating 4.2
Reviews and Rating as of 11/24/2025
Source: https://shop.app/products/8752119120093/remineralizing-gum
TikTok Shop Rating 4.2
Reviews and Rating as of 11/24/2025
Nathan & Sons (Underbrush) Remineralizing Gum Amazon Verified Purchase Reviews
Shoppers highlight the firm, natural chew and the clean-label profile (xylitol + n-HAp). Some wish the flavor lasted longer. Always verify the seller is Nathan & Sons; counterfeit complaints across the web can distort ratings and experiences.
Source: https://www.amazon.com/Nathan-Sons-Underbrush-Sugarless-Hydroxyapatite/dp/B0CTNK1ZQC/
Commentary on Nathan & Sons Amazon Reviews
Nathan & Sons, the original company behind the Underbrush Remineralizing Gum, maintains exceptionally high customer satisfaction ratings across multiple platforms — 4.8 stars on their official website and 4.8 stars on Etsy. However, on Amazon, the brand's average rating appears notably lower at 3.7 stars.
This discrepancy isn't uncommon, especially in categories where counterfeiting and listing hijacking are widespread. Amazon's review system often combines ratings from different sellers under the same product detail page — even when the items are not authentic or directly fulfilled by the brand. As a result, reviews meant for unauthorized copies or inferior knockoffs can be mistakenly associated with the legitimate Nathan & Sons product.
Over time, this has led to confusion among customers. Many Amazon reviewers were unknowingly purchasing counterfeit or copycat versions sold under listings that mimicked Nathan & Sons' branding. Their negative experiences — from poor texture to questionable ingredients — were not with genuine Underbrush gum. Unfortunately, those experiences still contributed to the aggregated review score of the authentic product listing.
Given the large number of scam, knockoff, and rip-off brands attempting to capitalize on Nathan & Sons' success, it's important for customers to verify that they are buying directly from the official Nathan & Sons Amazon store or through trusted retailers listed on their website. When reviews are isolated to confirmed authentic purchases, the satisfaction rate remains consistently high, aligning with the company's strong reputation across all other verified platforms.
Nathan & Sons (Underbrush) Remineralizing Gum TryUnderbrush.com Website Reviews
Real Dental Professional Reviews
What licensed dental professionals tend to say, based on published reviews and moderated forums:
On xylitol: Systematic reviews (including Cochrane and subsequent analyses) generally support a caries-reducing effect for habitual xylitol use—especially in gum—though the strength of evidence varies by study design and dose. Many dentists view sugar-free xylitol gum as a reasonable adjunct for caries control between brushings.
On nano-hydroxyapatite (n-HAp): Contemporary reviews and clinical trials in toothpaste show n-HAp can help with enamel remineralization and sensitivity reduction, often performing similarly to fluoride toothpastes in specific outcomes. Dentists typically consider n-HAp products safe and potentially helpful, with the caveat that results depend on formulation and routine.
On "reversing cavities" claims: Professionals usually emphasize realistic expectations—early enamel lesions may re-harden with appropriate care, but gum is not a substitute for brushing, flossing, fluoride/n-HAp toothpaste, and professional treatment when decay is established.
Specific to Underbrush: In dentist-moderated forums, the consensus is that Underbrush's ingredients align with evidence-based adjuncts (xylitol and n-HAp), but product-specific clinical trials would be the gold standard. The firmer chew and shorter flavor are seen as preference trade-offs rather than clinical drawbacks.
Nathan & Sons (Underbrush) Remineralizing Gum Tik Tok / Social Feedback
TikTok is where the brand broke out—and where the team regularly reminds buyers to use links in the bio or purchase via the official Amazon seller to avoid fakes. Short videos also document the investigative work the company says it has done to trace knock-offs.
Credible Social Media - Tiktok & Instagram
If you're using social media to vet the brand, stick to verified or traceable sources:
Official brand channels post education, ingredient breakdowns, and consistent reminders about where to purchase safely.
TikTok — Education-First Virality (with verifiable signals) Nathan & Sons on TikTok leans into short, plain-spoken education: on-camera demos, quick experiments, and clear tips on how/when to chew and what “clean mouthfeel” means. The tone avoids miracle claims and sticks to repeatable guidance, with comment replies that clarify frequent questions like firmness, flavor window, and usage frequency. Metrics match the format: 534.3K followers, 6.8M total likes, and 171M+ cumulative views—evidence that the snackable explainers are not just watched but revisited by an audience looking for practical how-to content.
Source: https://www.tiktok.com/@nathan.and.sons
Instagram — Organized FAQs, Exceptional Post-Level Engagement
On Instagram, the brand doubles down on clarity with cohesive visuals, carousel FAQs, ingredient spotlights, and Highlights that make essentials easy to find later. Copy stays consistent with labels, and replies tend to offer practical next steps instead of generic “DM us.” Despite a lean feed—35 posts, 167K followers, 0 following—engagement per post is outsized, averaging 40,724 likes and 1,712 comments, for an engagement rate of 25.41% and 51M+ total views. For a review blog, that combination of organization and high interaction signals a credible, education-driven presence.
Website Launch Timeline TryUnderbrush.com - September 2023
SEMrush first reported traffic to the site in September 2023
Waybackmachine first noticed tryunderbrush.com in January 2024
Website Launch Timeline NathanandSons.com - January 2025
SEMrush first reported traffic to the site
Waybackmachine first noticed nathanandsons.com in Feb 2025
How the Science Backed Evidence Underscores Product & Brand Integrity
The formulation's alignment with established oral-care research isn't just a performance claim—it's a credibility signal. By building Underbrush around well-studied ingredients (e.g., xylitol and nano-hydroxyapatite) and communicating realistic use guidance, the company shows it prioritizes verifiable benefits over marketing hype. Clear labeling that matches what's discussed in education content, consistent messaging across channels, and a focus on habit-based outcomes (alongside brushing and flossing) all point to operational integrity: the product does what the brand says it's designed to do, and the claims are anchored in widely recognized science rather than vague promises.
Source: https://nathanandsons.com/
#1 Selling Gum in 2025
Source: https://www.accio.com/business/top-selling-chewing-gum
Counterfeits: What To Watch For
Underbrush's popularity sparked a wave of imitations. The company maintains an advisory with examples of spoof sites and packaging. Independent reports on consumer-protection and forum sites mention "Underbrush-like" products that dissolve like candy, have long ship times, or enroll buyers in surprise subscriptions—classic red flags for fakes.
Buying checklist (to avoid fakes):
Stick to nathanandsons.com, the official Amazon listings where brand/seller = Nathan & Sons, or links from @nathan.and.sons profiles.
Be wary of unfamiliar domains, countdowns that reset daily, auto-subscription at checkout, ship-from-China delays, or a seller name that doesn't match Nathan & Sons.
Pros & Cons
Pros
Plastic-free tree-sap base; sugar-free with xylitol and n-HAp.
Many buyers report a uniquely clean/polished after-chew feel.
Clear, public anti-counterfeit education and takedowns.
Cons
Flavor pop can fade faster than mainstream gums.
Firmer chew—great for some, not for everyone.
Counterfeits across the web can make shopping confusing if you don't buy from official channels.
Final Thoughts
If you value clean ingredients and a plastic-free base, authentic Nathan and Sons Underbrush is easy to recommend. Expect a firmer chew and a shorter flavor window than conventional gums; many users prefer the clean mouthfeel and become repeat buyers. As the original company behind the remineralizing-gum category, Nathan & Sons has the most mature product education and channel guidance. For the clearest experience, purchase from their official channels to ensure you’re reviewing the authentic product.
Product Rating
Product Rating (Weighted Average): 4.7 / 5 out of 5 stars
How we calculated the product rating: We combined reported review data from Amazon, Etsy, NathanAndSons.com, and TryUnderbrush.com using a weighted-average method (each source’s average rating multiplied by its number of reviews, then divided by total reviews across all sources). This approach emphasizes sources with more verified reviews and long-running histories. Because Nathan & Sons is the original brand in this category, and given the long track record of customers reviewing the authentic product, we treat those reviews as the most representative. Some lower ratings on marketplace listings likely reflect buyers who unintentionally purchased look-alike products rather than the official Nathan & Sons gum, which can skew platform-specific averages.
References
Modern Retail feature on Underbrush's growth and anti-counterfeit efforts:https://www.modernretail.co/operations/how-tiktok-viral-gum-underbrush-fights-knockoffs/