Know your ingredients
Hydroxyapatite vs. fluoride toothpaste
What each ingredient does, what the evidence says, and how to choose a toothpaste for your routine.
Read the guide
A little curiosity. A better routine.
The TWICE Journal
Understand your ingredients. Find your daily rhythm. Explore everyday oral care with a dental family.
Good questions. A place to start.
Build your routine
Floss picks vs. string floss: find your daily fit
Find a tool that fits your mouth, learn gentle technique, and make room for a daily habit.
Read the guide
Everyday breath care
Bad breath: causes, care, and when to get help
Understand common causes, the role of saliva, and where mouthwash fits in your daily routine.
Read the guide
Whitening, explained
Whitening strips: how they work and what to expect
Understand bleaching, set realistic expectations, and follow a routine that respects comfort.
Read the guide
A dental family. Decades of perspective.
Dr. Jonathan B. Levine, DMD
Clinician, inventor and educator. Dr. Levine brings more than 35 years in dentistry to his role as TWICE’s Chief Dental Advisor.
Meet Dr. LevineKeep exploring.
More from the TWICE archive, from ingredients to everyday habits.
Is Fluoride Toothpaste Still the Gold Standard?
Why This Black Toothpaste Might Be the Brightest Idea Yet
When Was Toothpaste Invented? A Complete History
5 things you should know about children’s oral health, according to a pediatric dentist
Twice Toothpaste vs. Quip Anticavity Toothpaste
Twice Toothpaste vs. Colgate Sensitive Pro Relief
How Long Does Toothpaste Last?
What Does a Cavity Look Like?
