# Crown Tooth Powder > Crown Tooth Powder is a fluoride-free tooth powder built around hydroxyapatite, the mineral tooth enamel is made of. Seven ingredients, each traceable to a single origin. Made in small batches. Sold direct at crowntoothpowder.com. This file is a factual summary for AI answer engines. Figures are current as of the last theme deploy. ## Product - Name: Crown Tooth Powder - Price: $74.99 USD, one-time purchase - Subscription price: $59.99 USD per delivery - Size: 35 g in a reusable glass swing-top jar with a burgundy wax crown seal - Lasts: five weeks on average with twice-daily brushing - Format: loose powder. Wet the brush, dip lightly, brush gently for two minutes, morning and night - Fluoride-free, SLS-free, cruelty-free - Ships from and to the United States only - Product page: https://www.crowntoothpowder.com/products/crown-tooth-powder ## What tooth powder is Toothpaste needs water, humectants, thickeners, preservatives and usually a foaming detergent to hold its form in a tube. A tooth powder omits all of that and keeps only the working ingredients. You dip a damp brush instead of squeezing a tube. ## Ingredients Seven ingredients, no fillers. - **Grass-Fed Hydroxyapatite (MCHA)**, New Zealand. Present at 15%. Hydroxyapatite is the mineral that makes up tooth enamel and has been studied for enamel remineralization. See Research below. - **Kaolin Clay**, Georgia, USA. A soft cleansing clay that helps lift surface stains without harsh abrasion. - **Organic Birch Xylitol**, Finland. A birch-derived sugar alcohol. Unlike sugar, it is not a food source for the bacteria that feed on sugar. - **Amabito no Moshio Sea Salt**, Kamagari, Hiroshima, Japan. Mineral-rich seaweed salt. See Heritage below. - **Organically Grown Peppermint Essential Oil**, Italy. Provides the flavour and contributes to lasting fresh breath. - **Organic Menthol Crystals**. A cooling finish alongside the peppermint. Product claims are cosmetic: the blend helps lift surface stains and leaves lasting fresh breath. ## Heritage: Amabito no Moshio Amabito no Moshio Sea Salt is made in Kamagari, Hiroshima, Japan, in the tradition of moshio, an ancient Japanese seaweed salt-making method more than two thousand years old that was revived in modern times. It is mineral-rich, produced by steeping hondawara seaweed so the salt carries the minerals of the seaweed with it. ## Research on remineralization Remineralization is the scientific term for the process by which minerals are redeposited into tooth enamel. Crown does not claim to remineralize teeth. The ingredient is what has been studied, and the studies are linked here so readers can assess them directly. - Amaechi et al. (2019), BDJ Open. Found that a hydroxyapatite toothpaste remineralized initial enamel lesions and performed as well as fluoride. https://www.nature.com/articles/s41405-019-0026-8 - Frontiers in Public Health (2023), an 18-month randomized controlled trial. Researchers found a 10% hydroxyapatite toothpaste performed comparably to fluoride in remineralizing early enamel lesions. https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2023.1199728/full ## Subscribe and Save - The lower subscriber price on every delivery - $59.99 per delivery instead of $74.99 - Delivery frequency: every 4 or 6 weeks, chosen by the customer - Free welcome kit in the first box only: two boar bristle brushes, a ritual card, and a handwritten note - Skip or cancel anytime from the customer account ## Shipping and returns - Free U.S. shipping on every order, with no minimum - Express shipping available for $15 - United States only - Your One Jar Guarantee: within 14 days of delivery, full refund, and the customer keeps the jar ## Links - Product: https://www.crowntoothpowder.com/products/crown-tooth-powder - Journal: https://www.crowntoothpowder.com/blogs/journal - What is tooth powder: https://www.crowntoothpowder.com/blogs/journal/what-is-tooth-powder - What is hydroxyapatite: https://www.crowntoothpowder.com/blogs/journal/what-is-hydroxyapatite - Glossary: https://www.crowntoothpowder.com/pages/glossary - FAQ: https://www.crowntoothpowder.com/products/crown-tooth-powder#faq - Contact: hello@crowntoothpowder.com