Frequently asked questions

Yes. The brush head is constructed from food-grade antibacterial silicone — non-allergenic, BPA-free, and body-safe. The same antibacterial properties that make it mouth-safe also inhibit bacterial buildup on the head between sessions, keeping the tool itself consistently cleaner than a conventional bristle brush.

A high-frequency sonic vibration motor drives rapid micro-movements across all tooth surfaces simultaneously. Because the U-shaped head wraps around every tooth at once — top, bottom, front, and back — the vibration does the work. No technique, no back-and-forth motion required.

A USB rechargeable lithium cell powers the Arc and typically lasts several days of regular use between charges. Charge via any standard USB cable before the low-battery indicator activates. No proprietary cables needed, making it equally practical at home or while traveling.

Yes. Arc features a waterproof-sealed electronic assembly, making it safe for full bathroom use. Rinse the silicone head under running water after every session. The sealed body shell is BPA-free ABS, designed to handle the daily moisture conditions of any bathroom routine.

A conventional electric toothbrush still requires manual technique — moving a small head across each zone. Arc's full-arch U-shaped head covers every tooth surface at once in a single thirty-second hands-free session, removing the guesswork entirely. It is a complete system, not just a faster version of what you already own.

Please refer to the current return policy listed at checkout for the most accurate terms. Zentari is positioned as a daily ritual investment, and our customer support team is available to assist if your experience doesn't meet expectations before a return decision is made.

Yes. Any subscription or recurring arrangement can be paused or cancelled at any time — no friction, no penalty. Manage your preferences directly through your Zentari account or reach out to customer support. We believe Arc should earn its place in your routine, not be locked into it.

Limited tracking means the tracking page may show only major checkpoints instead of every carrier handoff. Updates can pause between scans, especially while a parcel is moving between facilities or being transferred for local delivery. You may sometimes see extra detail on external parcel-tracking websites by entering the same tracking number. Free shipping options with limited tracking can take up to 30 days.