made by a dental family.for yours.
Serious care.Made joyful.
Caring for your mouth should feel like caring for yourself. We bring a lifetime in dentistry to purposeful formulas, thoughtfully designed tools and a routine you can look forward to.
Meet Dr. Levine What goes into TWICE
Everything on purpose.
Every ingredient, concentration and design detail has to earn its place. That’s the standard behind every TWICE product.
Start with the science.
We choose ingredients for their purpose and the evidence behind them. Every formula starts with a clear job in your daily care.
Take the time.
Good products take patience. Development can take years, refining the formula, flavor, texture and feel until the whole experience comes together.
Keep getting better.
Our standards stay high. Our thinking stays open. As the science evolves, we keep asking how our products can serve your routine better.
Built from a life in dentistry.
A smile can change a life.
Brothers Julian and Cody Levine grew up in a family devoted to dentistry. On GLO Good missions, our family saw how care could restore comfort, confidence and the freedom to smile.
That experience inspired TWICE: bring the same intention to the care people use at home. Thoughtful products. Clear routines. A little more joy in the small moments between dental visits.

Our father. TWICE’s Chief Dental Advisor.
Dr. Jonathan B. Levine, DMD
Dentist. Inventor. Educator. Author.
Decades of patient care, teaching and invention shape our approach to every product: understand what the mouth needs, ask better questions and keep improving the care people use every day.
- 35+
- Years caring for patients
- 29
- Patents in oral care innovation
- NYU
- Former Associate Professor
His role at TWICE
As our Chief Dental Advisor, Dr. Levine brings a clinician’s perspective to TWICE’s approach to oral care. His experience in patient care, teaching and invention is part of the dental foundation behind our family business.
A career beyond the chair.
Teaching & education
Former Associate Professor and Director of the Advanced Aesthetics Program at NYU. Former Chair of the Dean’s Advisory Board at Boston University’s Goldman School of Dental Medicine.
Invention & access
Holder of 29 oral care patents and founder of GLO Science and the GLO Good Foundation. His work spans product innovation and dental care for underserved communities.
Books & conversations
Author of Smile! The Ultimate Guide and editor of Volume Two of Essentials of Esthetic Dentistry. Co-host of Think Oral Health with Mariya Filipova.
Explore Think Oral HealthStill moving care forward.
At Smile House in New York, Dr. Levine continues his work in dental longevity. That same curiosity keeps TWICE looking forward as the science evolves.
Meet Dr. Levine at Smile HouseExplore the TWICE guides.
Practical answers, written by TWICE, with sources linked alongside the guidance.
Your mouth doesn’t need another product. It needs a better routine.
We make thoughtful oral care, with a clear purpose for every product and a little more joy in the everyday. Because caring for your mouth is part of showing up for life, with a smile.
Explore the complete TWICE setHappy Mint
5% nano-hydroxyapatite. A fresh mint flavor. Thoughtful ingredients in a toothpaste made for everyday brushing.
Explore Happy MintTriple Floss Picks
Three wax-coated strands form a little net to help catch and lift trapped food. Strong Mint flavor and a ready-to-use grip make the details count.
Meet Triple Floss PicksStadium Toothbrush
Three tiers of soft bristles and a soft-touch gel handle. Care considered down to the way your brush feels in your hand.
Meet StadiumGum Shield
Mild Shield Mint flavor. Alcohol-free. CPC to help control plaque that leads to gingivitis and bleeding gums. Use as directed.
Explore Gum Shield