Episode 10

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Published on:

22nd Sep 2025

10: Do Natural Whitening Hacks Work? The Hidden Dangers of DIY Whitening Tricks with Dr. Rob & Tami

Do DIY teeth whitening hacks like banana peels, charcoal, or turmeric really work—or are they quietly damaging your enamel?

In this episode of Dental Formulator’s Playbook, Dr. Rob and Tami take a critical look at popular at-home teeth whitening remedies—from banana peels and charcoal to baking soda, turmeric, and acidic fruits. They unpack the science behind these viral trends, separating fact from fiction. While many natural approaches lack scientific evidence or pose risks to enamel, enzyme-based alternatives and PAP (a peroxide substitute) show real potential. The conversation emphasizes that peroxide remains the gold standard for whitening, but urges listeners to approach new trends with caution and professional guidance. If you’ve ever considered a DIY whitening hack, this episode gives you the evidence-based clarity you need.

🔥 Highlights

↠ Do banana peels, turmeric, and other “natural hacks” actually whiten teeth?

↠ Charcoal and baking soda: effective or enamel-damaging?

↠ The hidden risks of acidic fruits for enamel erosion.

↠ Enzyme-based whitening alternatives — where the research stands.

↠ PAP (phthalimidoperoxycaproic acid) as a peroxide substitute: how it works and its promise.

↠ Why peroxide remains the most effective and studied whitening agent.

↠ Common myths and misinformation in DIY oral care.

↠ Practical advice for anyone tempted to try home remedies.

Connect with Dr. Rob (Robert L. Karlinsey, PhD)

🌐 Website: customdentalformulations.com/meet-dr-karlinsey

📄 Research Profile: ResearchGate – Robert Karlinsey

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About the Podcast

Dental Formulator's Playbook
The Dental Formulator’s Playbook is where science meets strategy in the world of oral health innovation. Hosted by Dr. Rob Karlinsey, a seasoned dental researcher and independent formulator, this podcast is your behind-the-scenes pass to what really goes into creating cutting-edge dental products.

Whether you're a dentist, a dental brand, or just someone curious about how toothpaste, rinses, and other oral care products are developed, you'll find practical insights and real-world takeaways in every episode. Dr. Karlinsey keeps it straightforward and engaging—no fluff, just clear, thoughtful explanations based on years of experience in the lab and the industry.

This show is all about helping dental professionals and product developers think differently, make better decisions, and stay ahead of the curve. If you care about science, results, and doing things the right way, you're in the right place.

About your host

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Robert Karlinsey

Dr. Robert L. Karlinsey is a scientist and formulator with almost 20 years’ experience in dental research. He earned a BS in Physics (University of Scranton) and PhD in Chemical Physics (Indiana University), with postdoctoral work in physical chemistry (Indiana University). As a visiting assistant research professor at the Indiana University School of Dentistry, his research led to an impactful encounter with Dr. George Stookey, and shortly thereafter, the formation of Indiana Nanotech, LLC (now known as Custom Dental Formulations, LLC), of which he spearheaded all research and small-scale manufacturing efforts. Dr. Karlinsey is the inventor of Nanotech’s functionalized tricalcium phosphate systems, which continue to help generate over $100MM in global product sales for a major dental manufacturer. As Principal Investigator, his work has received significant funding through Federal (National Institutes of Health), State (Indiana and Texas), and industry grants and contracts. His research in patented calcium phosphate technologies continue to help generate over $100MM in global product sales. Previously, Dr. Karlinsey has served as Chief Scientific Officer at Therametric Technologies, Inc, and adjunct professor of chemistry at the University of Indianapolis.

Dr. Karlinsey addresses clients’ needs in preventive and cosmetic dentistry, including fluoride- and fluoride-free remineralization, antiplaque/gum health, whitening systems, and more. He is actively involved in clinical and laboratory research designs and performance-backed, customized oral care formulation solutions. And, whenever possible, he favors natural, nature-derived, and/or sustainably sourced ingredients