What is the percentage of MCHA in Smile?

The exact percentage of microcrystalline hydroxyapatite (MCHA) in our Smile Toothpaste is proprietary information that even we OraWellness Customer Caregivers don’t have access to. What we do know, and can share with the community, is that the percentage is over 20%.

That said, if you’re concerned that the percentage of MCHA in Smile is greater than 10%, please watch this video that details the differences between nano-HA (which is a regulated substance) and micro-HA (which is the natural particle size that we use in our product solutions): Why the Quantity of Hydroxyapatite in Toothpaste Matters for Remineralizing Cavities