Yes — our gel uses a carefully balanced carbamide peroxide formula that lifts stains without compromising the enamel layer. Every kit is designed to be enamel-safe when used as directed.

Yes. Our formula is gentle enough for most sensitive smiles, and the Black Edition kit includes potassium nitrate to soothe sensitivity. If you experience any discomfort, reduce to every second day or shorten your session.

We recommend waiting until after pregnancy and breastfeeding before beginning any whitening treatment. Always check in with your doctor or midwife if you are unsure.

Most people see visible brightening after just one or two 10-minute sessions, with a clear, visible lift by day 7 of consistent daily use.

With normal diet and care, results typically last between 3 and 6 months. To extend them, we recommend weekly top-ups with your LED kit or daily use of Glowfilter whitening powder.

Yes — these are the most common stains our customers tell us about, and our kits are specifically designed to lift them from the enamel surface. Daily coffee drinkers tend to see the most dramatic before-and-after shift.

Ten minutes. All of our LED mouthpieces run on a 10-minute auto-shutoff cycle so you can simply pop it in, relax, and let it do the work.

We recommend daily use for the first 7 to 10 days for your initial transformation, then once or twice a week for ongoing maintenance.

Brush before your session so the gel can reach clean enamel, and rinse (rather than brush) immediately after to let the formula settle. A light brush an hour later is perfectly fine.

We recommend waiting at least 30 minutes before eating or drinking anything other than water, and avoiding deeply coloured foods like coffee, red wine, and curry for the first few hours.

Standard NZ orders arrive in 2 to 4 business days, with free shipping on orders over $150. Tracked courier is included on every order.

Yes — we ship to Australia with tracked courier, typically arriving within 5 to 8 business days. Shipping is calculated at checkout based on your location.

You will receive a tracking link by email as soon as your order ships. If you have not received it within 48 hours of ordering, please email hello@twinklewhite.co.nz.

We offer a 30-day return window on unused, unopened products. Customers are responsible for return shipping costs, and refunds are processed within 5 business days of us receiving the item.

We stand behind our kits with a 30-day money-back guarantee if you have used your device at least 10 times and seen no visible improvement. Just email hello@twinklewhite.co.nz with your before-and-after photos and we will sort you out.