Every so often a new ingredient makes headlines in oral care. Lately it's keratin — yes, the protein in sheep's wool — being explored by researchers as a future toothpaste ingredient. So how does it stack up against hydroxyapatite, the mineral at the heart of ENML's formula? Here's the honest comparison.
Two Very Different Ingredients
| Hydroxyapatite (ENML) | Sheep Wool Keratin | |
|---|---|---|
| What it is | A calcium-phosphate mineral — the same mineral that makes up roughly 97% of tooth enamel | A structural protein extracted from wool |
| Where it stands | Formulated in toothpastes for decades; on shelves today | Early-stage laboratory research; no mainstream products yet |
| Vegan | Yes — ENML uses synthetically produced hydroxyapatite, no animal inputs | No — animal-derived by definition |
| Availability | In ENML tablets now, in five flavors | Not commercially available |
| Format | Waterless tablets, plastic-free packaging | N/A — still in the lab |
Our Take
Keratin research is genuinely interesting, and we'll be watching where it goes. But there's a difference between a promising lab concept and an ingredient you can actually brush with tonight. Hydroxyapatite is biocompatible, well-characterized, vegan in its synthetic form, and — most importantly for us — it's literally the mineral your enamel is made of. That's why it's the hero ingredient in every ENML formula.
Want the deeper story on our ingredient? Read Hydroxyapatite vs. Fluoride: A Dentist's Guide or explore ENML Toothpaste Tablets — fluoride-free, SLS-free, plastic-free, and available now, no sheep required.