bio. retainers — the only retainers in the UK independently confirmed free from harmful microplastics. Read the bio. Standard →

straight teeth.
without the plastics.

bio. is the first UK dental brand with retainers independently confirmed free from harmful microplastics. Our clear braces (invisible braces) are clinically proven to straighten teeth — every plan personally designed by a specialist orthodontist. No practice visit required.

Book your free consultation Read the bio. Standard →
bio. custom retainer system — bio-derived plant polymer, independently tested free from harmful microplastics, BPA and phthalates
— bio. custom retainer system

Bio-derived plant polymer. Zero harmful plastics.
Tested below detection limits for BPA and phthalates.

"bio. retainers are the only retainers in the UK independently confirmed free from harmful microplastics."

bio.uk/standard

— bio. in motion
A new standard for what touches you. bio. — 2026
— Our products

Two products. One standard.

Clean-material dental devices, clinician-supervised, with the transparency to prove every claim.

/ 01 — CLEAR BRACES
bio.aligners

Clear braces. Specialist-designed. Delivered to your door.

From £1,995 with 0% finance. bio. clear braces (also called invisible braces) are clinically proven — every plan designed by a UK-registered specialist orthodontist. One scan appointment or at-home impression kit. Everything else remote.

View clear braces →
/ 02 — RETAINERS
bio.retainers

The only retainer in the UK confirmed free from harmful microplastics.

£220 for your first set. £180/year annual subscription. Independently tested by an ISO 17025 laboratory. Every result published by lot number at bio.uk/standard.

View bio.retainers →
— The bio. material difference

What bio. is made of.

Most dental device brands never disclose their materials. We built the opposite model: every substance disclosed, every claim tested, every result published.

I
100% Microplastic-Free
No unstable plastics that fragment and leach into your body over time. bio. materials are independently tested for microplastic particle release under simulated wear conditions — confirmed below detection limits.
Confirmed by ISO 17025 lab
II
Advanced Organic Polymers
Formulated from biocompatible organic polymers derived from plant-based sources. Extreme durability, long-term safety. Full polymer composition disclosed by FTIR spectroscopy — a standard no other UK brand meets.
Plant-derived · BPA-free · phthalate-free
III
Independently Tested
Every production batch tested by an ISO 17025-accredited laboratory. Results for BPA, BPS, BPF, phthalates, heavy metals, and microplastic release published in full by lot number. Re-tested on every new production run.
— How it works

Three steps.

1.
Free consultation

Tell us about your teeth online. Reviewed by our orthodontic team within 24 hours. Honest assessment — we confirm suitability before you commit to anything.

2.
Scan or impression kit

One 20-minute visit to a bio. partner practice for a digital scan. Or order an at-home impression kit. Your choice — both produce a specialist-designed plan.

3.
Delivered to your door

Your specialist orthodontist personally designs your complete plan. bio. delivers. Treatment begins. Photo check-ins at key stages throughout.

— The bio. Standard

Tested. Published. Re-tested.

Most dental devices are made from thermoplastics. Most manufacturers publish nothing about what those materials shed into your mouth during wear. bio. considers this unacceptable. Every product we sell is independently tested by an ISO 17025-accredited laboratory. Every result is published in full.

Read the bio. Standard →
ISO
17025-accredited independent testing
UK
Specialist orthodontist-designed clear braces, every case
0%
Finance available over 24 months
— Transparent pricing

No hidden costs.

Spread over 24 months at 0% APR. Every package includes a free bio.retainer set on completion — the only retainer confirmed clean.

/ Essential
Essential

Mild crowding & minor gaps

£1,995

from £83/month — 24 months, 0% APR

Free online consultation
Scan or at-home impression kit
Complete clear braces set
Specialist-designed plan
Free bio.retainer set on completion

/ Comprehensive
Comprehensive

Significant crowding & bite issues

£3,495

from £146/month — 24 months, 0% APR

Everything in Complete
Complex bite cases
Post-brace relapse
Full clinical support
Free bio.retainer set on completion

Representative example: bio. Essential (£1,995), 24 monthly payments of £83.13, 0% APR. Subject to eligibility. At-home impression kit available at +£75 for Essential cases. bio.retainers first set £220, then £180/year.

— 0% finance available
Pay nothing extra.
Spread over 24 months.

Subject to eligibility. No impact on your credit score to apply. Finance provided by our partner lender.

Check eligibility free
Essential
£83/mo
£1,995 total · 24 months
Complete
£116/mo
£2,795 total · 24 months
Comprehensive
£146/mo
£3,495 total · 24 months
— Patient stories

From patients who've been through it.

From bio.'s early adopter pilot programme. All verified. Unedited.

★★★★★

"I'd looked at all the big clear braces brands. bio. was the first where I could actually read exactly what the trays were made of. That mattered to me."

Sarah M.
Complete plan · 8 months · London
✓ Verified bio. patient
★★★★★

"I was expecting it to be complicated. The whole thing genuinely only took one appointment. Everything else was done from home."

James T.
Essential plan · 5 months · Manchester
✓ Verified bio. patient
★★★★★

"I had braces as a teenager and my teeth had shifted back. bio. sorted it in four months. My retainer is now the only one I'd trust to wear every night."

Priya K.
Essential plan · 4 months · Birmingham
✓ Verified bio. patient
Read more patient stories →

From bio.'s early adopter pilot programme. We don't curate. All verified reviews published at bio.uk/reviews.

— Early access

Join the bio. waitlist.

Early access. £150 off your first treatment for the first 50 patients.