Fluorosis is not a cosmetic issue - it can be severe enough that it impacts the strength of the skeleton. Even if that was not the case, you'd need to prove th

Fluorosis is not a cosmetic issue - it can be severe enough that it impacts the strength of the skeleton. Even if that was not the case, you'd need to prove that it's better than hydroxyapatite when applied topically, which (assuming effective) delivery will obviously not be the case. https://pubmed.ncbi.nlm.nih.gov/3295994/ https://pubmed.ncbi.nlm.nih.gov/3295994/