— bio. custom retainer system
Bio-derived plant polymer. Zero harmful plastics.
Tested below detection limits for BPA and phthalates.
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.
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."
Clean-material dental devices, clinician-supervised, with the transparency to prove every claim.
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 →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 →Most dental device brands never disclose their materials. We built the opposite model: every substance disclosed, every claim tested, every result published.
Tell us about your teeth online. Reviewed by our orthodontic team within 24 hours. Honest assessment — we confirm suitability before you commit to anything.
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.
Your specialist orthodontist personally designs your complete plan. bio. delivers. Treatment begins. Photo check-ins at key stages throughout.
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 →Spread over 24 months at 0% APR. Every package includes a free bio.retainer set on completion — the only retainer confirmed clean.
Mild crowding & minor gaps
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
Moderate crowding & spacing
from £116/month — 24 months, 0% APR
Everything in Essential
Moderate case complexity
Extended monitoring
Replacement tray coverage
Free bio.retainer set on completion
Significant crowding & bite issues
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.
Subject to eligibility. No impact on your credit score to apply. Finance provided by our partner lender.
Check eligibility freeFrom 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."
"I was expecting it to be complicated. The whole thing genuinely only took one appointment. Everything else was done from home."
"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."
From bio.'s early adopter pilot programme. We don't curate. All verified reviews published at bio.uk/reviews.
Early access. £150 off your first treatment for the first 50 patients.