What are bio. retainers made of?

A bio-derived, plant-based polymer — independently tested for microplastic and BPA-derivative release, with results published by lot, BPA, BPS, BPF and phthalates. No other UK retainer brand has published equivalent testing.

Why is bio. the only retainer brand to publish microplastic testing?

Every retainer in the UK market is made from standard thermoplastic that has not been independently tested for microplastic shedding. bio. is the first to test ours and the first to publish the data.

How does the impression kit work?

Order online and your kit arrives next day with step-by-step instructions and a video walkthrough. It takes about 10 minutes at home. Post it back in the included pre-paid packaging. Custom retainers are delivered within 5 working days.

Why do I need to replace my retainer each year?

Teeth shift and materials age. An annual replacement is the standard of care, and the subscription keeps a fresh, tested set on your teeth without re-ordering.

Is this teledentistry?

No. Every case is managed by a registered UK clinician. Clean materials and proper supervision are part of the same product.

Order bio.retainers

Build your order.

Name: bio.retainers
Brand: bio.
Availability: InStock

Choose your arches, decide between a single set or the annual subscription, and add an impression kit if you need one. Your price updates as you go — then check out securely with Stripe.

What arrives: bio. retainer in its moulded pulp tray inside the kraft box, with card

01Which arches?

02Single set or subscription?

03Add an impression kit?