Three ingredients. Pharmaceutical-grade nano-hydroxyapatite — the same mineral your enamel is made of. Xylitol which creates the right environment for the mineral to absorb and starves cavity-causing bacteria. And a 3-strain oral probiotic blend which restores healthy saliva production and protects what's been rebuilt. No fluoride. No harsh chemicals. No fillers. That's it.

Chew one tablet daily, ideally after brushing at night. As you chew, the mineral coats every tooth surface. The residual film stays in contact with your enamel for hours — that's the whole point. It's not a toothpaste that rinses away in 30 seconds. You chew, you go to bed, and the mineral absorbs while you sleep.

Yes. SmileGuard works topically on your tooth surfaces — it doesn't enter your bloodstream or interact with medications. Hydroxyapatite is a naturally occurring mineral made of calcium and phosphate, the same minerals you consume in food every day. It's so safe that pediatric dentists in Japan have been applying it to children's teeth for over 40 years. If you have specific concerns, you're always welcome to show the ingredient list to your doctor or dentist.

Most do. Hydroxyapatite remineralization is well-established in dental science — it's been published in peer-reviewed journals and used as standard care in Japan for decades. Many of our customers tell us they showed the bottle to their dentist and were told to keep going. One customer wrote: "My dentist read the label and said this is exactly what my enamel needed." We actually encourage you to bring it to your next appointment.

Sensodyne numbs the nerve so you stop feeling the damage. The mineral loss underneath continues. Whitening strips use hydrogen peroxide, which actually strips the mineral your enamel is made of — making teeth more porous and yellowing worse over time. SmileGuard replaces the mineral itself. It doesn't mask the symptom. It addresses why the symptom exists.

Contact time. When you brush with HAp toothpaste, the mineral touches your teeth for maybe 60 seconds before you spit and rinse. That's not long enough to absorb. SmileGuard's chewable coats every surface and leaves a mineral film that stays in contact for hours. It's the difference between splashing water on a sponge and actually soaking it.

Most customers report reduced sensitivity within the first 2–3 weeks. Visible brightness improvement typically shows around weeks 4–6. By 90 days, the mineral rebuilding is significant enough that many customers say their teeth feel noticeably stronger and smoother. Results vary depending on your starting point — but that's exactly why we offer a full 90-day guarantee.

If you still have natural teeth, no. SmileGuard doesn't need to grow new enamel from scratch. It fills the microscopic pores and rebuilds density in enamel that's thinned and weakened — reinforcing what's still there. Whether you're dealing with early sensitivity or you've already had crowns, the mineral replacement works because there's always remaining structure that can accept it.

Then you pay nothing. SmileGuard comes with a 90-day money-back guarantee — not 30 days, not 60. We give you a full 90 days because mineral replacement takes time and we want you to see real results before you decide. If your teeth aren't stronger, less sensitive, and naturally brighter by then, email us and we'll refund every penny. No questions asked.

In the United States, in an FDA-registered, GMP-certified facility. Every batch is third-party tested for purity and potency. SmileGuard is not imported, not white-labeled, and not dropshipped from overseas. Dr. Ophelia Blue formulated it after 26 years of clinical dental practice — and it's manufactured to the same standards she'd expect for her own family.