Twice is a USA-based oral care brand built around hydroxyapatite-led formulas. Both Twice toothpastes are fluoride-free, peroxide-free and vegan, with hydroxyapatite as the primary mineral active in place of fluoride.
Charcoal Icy Mint pairs activated charcoal and baking soda with vitamins A, C and E. Happy Mint uses 5% nano-hydroxyapatite plus papaya and pineapple enzymes for triple-action enzyme whitening. Free Australia-wide shipping over $100.
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Twice is a USA-based oral care brand built around hydroxyapatite-led formulas. The two toothpastes in the Twice line — Charcoal Icy Mint and Happy Mint — are both fluoride-free, peroxide-free and vegan, with hydroxyapatite as the primary mineral active in place of fluoride. Buy Twice toothpaste in Australia through Toothpasteology with local shipping and free delivery on orders over $100.
Twice keeps its line tight — two whitening toothpastes, each with a different active stack:
Most fluoride-free toothpastes settle for one of two routes — either a passive natural blend, or a single-active hydroxyapatite formula. Twice does something less common: it builds the formula around hydroxyapatite and then layers in genuine secondary actives. Both formulas are fluoride free, peroxide free, SLS free and vegan-friendly. Neither uses harsh bleaching agents — the brightening comes from charcoal, enzymes and the polish of low-abrasivity silica.
Hydroxyapatite is a calcium-phosphate mineral that mirrors the building blocks of natural tooth enamel. It has been the standard fluoride alternative in Japan since the 1980s and is increasingly the go-to active in premium fluoride-free toothpastes worldwide. The Charcoal Icy Mint formula uses regular hydroxyapatite; the Happy Mint formula uses nano-hydroxyapatite (a smaller particle size) at a 5% concentration. For a deeper read, see our guide on hydroxyapatite toothpaste.
Toothpasteology stocks both Twice toothpastes — Charcoal Icy Mint and Happy Mint — with shipping from our Gold Coast warehouse. Standard delivery is 2–8 business days; express is 1–5. Free Australia-wide shipping on orders over $100.
Both Twice formulas use hydroxyapatite — a biocompatible calcium-phosphate mineral that supports enamel — as their primary active. They are fluoride-free, peroxide-free and SLS-free, which makes them suitable for daily use including for people who prefer to avoid fluoride or who experience SLS sensitivity. As with any toothpaste, the right choice depends on your specific oral health needs; if you have a high cavity risk, your dentist may still recommend a fluoride toothpaste.
Charcoal Icy Mint is built around activated charcoal and baking soda for gentle daily surface stain lift, with vitamins A, C and E and regular hydroxyapatite. Happy Mint is built around 5% nano-hydroxyapatite with papaya and pineapple enzymes for enzyme-based whitening. Charcoal is the choice if you want the visible black-paste experience and a baking-soda finish. Happy Mint is the choice if you want a higher hydroxyapatite concentration and enzyme whitening.
Yes. Both Twice toothpastes are vegan-friendly and free from animal-derived ingredients.
No. Both Twice formulas are fluoride-free. Hydroxyapatite acts as the primary mineral active in place of fluoride.
Hydroxyapatite Toothpastes · Fluoride-Free Toothpastes · Charcoal Toothpastes · Whitening Toothpastes
