Transparency done properly
Fygg publishes what almost nobody else will: the supplier of its hydroxyapatite and the actual concentration in the finished tube. It earns a full transparency score for that alone, and it makes every other brand look evasive by comparison.
The microbiome angle is more than marketing. Chicory root and L-arginine are included as substrates for beneficial oral bacteria, and the decision to leave out essential oils follows the same logic — broad antimicrobials do not distinguish between the bacteria you want and the ones you do not.
Where it loses ground
The published concentration is honest and also on the low side of the range studied for remineralization. Being told exactly what you are getting is worth a great deal, and what you are getting here is a modest dose.