What Silicone Grades and BPA-Free Really Mean for Your Chewable Jewels

You know that moment in the baby aisle—standing there with a teething necklace in one hand and a silicone bracelet in the other, flipping the packaging over and over, squinting at tiny print that says ‘100% silicone’ and ‘BPA-free’, and thinking, shouldn’t that be enough? We’ve been there too. The truth is, those two labels alone tell you almost nothing about what’s actually touching your baby’s gums. Our team decided to cut through the marketing fog and break down the science properly—so you can make decisions based on facts, not flashy packaging.

Why We Talk About Silicone Grades Obsessively

Not all silicone is created equal, and the differences matter enormously when something is going to spend hours in a teething baby’s mouth. Our team only uses medical and food-grade platinum silicone, and we’re not being precious about it—we’re following the rigorous standards set by the British Standards Institution (BSI) for products intended for prolonged oral contact. The BSI has clear specifications under BS EN 14350 for drinking equipment materials, and while teething jewellery sits in a slightly different category, we apply those same benchmarks to every chewable jewel we produce. If a silicone supplier can’t produce full traceability documentation and third-party test reports, we walk away. No exceptions.

The ‘Sniff Test’ and Industrial Fillers

Here’s a dead simple trick we use when evaluating raw silicone samples: we open the bag and inhale. Medical-grade platinum silicone has virtually no odour. If you catch even a faint chemical whiff—something plasticky, slightly acrid, reminiscent of a new shower curtain—you’re likely dealing with industrial-grade material or a batch loaded with fillers. Those fillers are cheap bulking agents that manufacturers add to cut costs, and they leach out over time, especially when warmed by skin contact or chewed repeatedly. Your baby’s gums shouldn’t be a testing ground for unknown plasticisers.

Platinum vs. Peroxide Curing: The Chemistry That Matters

The curing process is where silicone gets its final structure, and the catalyst used changes everything. Peroxide curing leaves behind acidic residues and volatile by-products that require extensive post-curing to remove—and even then, trace amounts can persist. Platinum curing, by contrast, uses a precious metal catalyst that creates exceptionally clean cross-links with minimal extractables. The result is a silicone that’s inert, stable, and genuinely biocompatible. It costs more to produce, which is why budget manufacturers avoid it. We don’t. Every Dr Bloom-inspired piece in our collection uses platinum-cured silicone exclusively.

Decoding the BPA-Free Label on a Teething Necklace

BPA-free has become such a universal selling point that it’s almost lost its meaning. Parents see it and feel reassured, but few realise that BPA is just one member of a much larger family of bisphenols—and that removing it doesn’t automatically make a product safe. Dr Bloom’s research in the early 2010s was pivotal in shifting public and regulatory attention toward estrogen-mimicking chemicals in baby products. His work highlighted that even low-dose exposure during critical developmental windows could have lasting effects, and it sparked a wave of reformulation across the nursery industry. We owe a lot to that research, but we also know the conversation didn’t end there.

Beyond BPA: BPS and BPF Substitutes

When manufacturers rushed to strip BPA from their plastics, many simply swapped it for structural cousins like BPS (bisphenol S) and BPF (bisphenol F). Chemically similar, these substitutes exhibit comparable estrogenic activity in laboratory studies, yet they’ve slipped into products under the radar precisely because they aren’t called ‘BPA’. A teething necklace labelled BPA-free could still contain these compounds if it’s made from polycarbonate blends or certain thermoplastic elastomers. Pure platinum silicone sidesteps this entire issue—bisphenols aren’t part of its chemistry to begin with, so there’s nothing to substitute.

Why ‘BPA-Free’ Is the Floor, Not the Ceiling

We treat the BPA-free label as a bare minimum requirement, not a badge of honour. The real question is what the product is made of, not what it’s free from. A silicone bracelet could be BPA-free and still contain phthalates, latex proteins, or industrial solvents. That’s why our material specifications go far deeper: we test for the full panel of restricted substances under EU REACH regulations, including all phthalates, heavy metals, and latex allergens. When you see ‘BPA-free’ on our packaging, it’s almost the least interesting thing about the silicone inside.

Breaking Down Silicone Grades: Food, Medical, and Industrial

The word ‘silicone’ covers a vast spectrum of materials, from the sealant around your bathtub to the tubing in a heart-lung machine. For chewable jewels, the distinction between food-grade and medical-grade is the line we draw firmly in the sand. Under UK and EU regulations, medical-grade material must pass biocompatibility testing—specifically cytotoxicity, sensitisation, and irritation assessments—that food-grade silicone never undergoes. A genuine teething necklace that will be gnawed on for months deserves that higher standard.

Food-Grade: Safe for Contact, But Not Necessarily for Teething

Food-grade silicone is approved for brief contact with food—think baking mats, spatulas, or the seal on a reusable coffee cup. It’s tested for extractables under conditions simulating single-use or short-term contact, but it isn’t designed for the kind of prolonged, abrasive, saliva-soaked environment that teething creates. Over weeks of chewing, lower-quality food-grade silicone can develop micro-tears where bacteria collect, and its plasticiser profile may not hold up to constant enzymatic exposure from saliva. It’s safe for contact; it’s not necessarily safe for consumption-like use.

Medical-Grade Platinum Silicone: The Gold Standard

Medical-grade platinum silicone is tested to USP Class VI or ISO 10993 standards for long-term bodily contact. It’s the same material used in neonatal pacifiers, feeding tubes, and implantable devices. For a chewable jewel, this means the material won’t provoke an inflammatory response in delicate oral tissues, won’t harbour pathogens in its surface structure, and won’t degrade into questionable fragments under mechanical stress. Our entire range meets this specification, and we maintain batch-level certificates that any customer can request. If a brand calls something ‘medical-grade’ but won’t show you the paperwork, treat that claim as decorative.

How a British Mum Tests a Silicone Bracelet at Home

We’ve spent years handling silicone samples, and we’ve developed a few practical checks that any parent can do at the kitchen table. These aren’t laboratory tests—they won’t detect trace chemical residues—but they’ll quickly weed out the worst offenders. Before you clip a teething necklace around your neck or hand a silicone bracelet to your little one, run through these simple steps.

The Pinch-and-Twist Purity Check

Take a section of the silicone between your thumb and forefinger, pinch firmly, and twist. Pure platinum silicone will momentarily turn whitish at the stress point and then immediately return to its original colour when you release. If the material stays pale or shows a permanent crease, it’s likely filled with bulking agents. You can also rub the surface vigorously with a clean white cloth—if any colour transfers, walk away. That’s pigment leaching, and it has no business near a baby’s mouth.

Why That High-Gloss Shine Can Be a Red Flag

Genuine medical-grade platinum silicone has a naturally matte, slightly velvety surface. A high-gloss, almost wet-looking shine often indicates a surface coating or a lower-grade silicone that’s been polished to hide imperfections. Those coatings can include silicone oils that feel greasy to the touch and gradually wear off onto skin and gums. We aim for a soft, matte finish on every piece—it grips gently, doesn’t feel sticky, and looks understated rather than plasticky.

Chewable Jewels vs. the High Street: What We Found

Curiosity got the better of us, so our team purchased a selection of teething necklaces and silicone bracelets from UK high-street retailers including Boots and Mothercare, then compared them against our own products. The differences weren’t subtle. While the high-street options weren’t necessarily dangerous, they revealed compromises that parents deserve to know about.

The Hidden Nasties in Budget Nursery Accessories

Several high-street pieces carried vague material descriptions like ‘soft plastic’ or ‘silicone blend’, which is a red flag in itself—if a manufacturer is proud of their material, they name it precisely. One bracelet from a well-known chain store emitted a faint solvent odour when removed from its packaging, suggesting incomplete curing or the presence of volatile organic compounds. Under EU REACH regulations, phthalates like DEHP, DBP, and BBP are restricted to less than 0.1% in childcare articles, but enforcement relies on spot checks, and budget supply chains don’t always face rigorous scrutiny. Our silicone contains zero phthalates, zero latex, and zero mystery ‘blends’.

Longevity: Why Pure Silicone Doesn’t Degrade

After three months of simulated daily use—chewing, stretching, washing, and exposure to saliva enzymes—the high-street alternatives showed surface pitting, discolouration, and in one case, a tacky texture that suggested plasticiser migration. Our platinum silicone bracelet remained structurally unchanged. Pure silicone doesn’t degrade under normal use conditions because there’s nothing in it to leach out or break down. That longevity isn’t just about value for money; it’s about not generating micro-particles that could be ingested over time.

Caring for Your Dr Bloom-Inspired Teething Necklace

Proper care keeps your chewable jewel hygienic and structurally sound. Platinum silicone is remarkably resilient, but a few UK-specific tips will help you get the longest, safest life from your piece.

Dishwasher, Steam, or Milton Cold Water?

All three methods work, but we favour Milton cold water sterilising for everyday use. It’s widely available in UK supermarkets and pharmacies, it’s gentle on silicone at room temperature, and it leaves no residue when you follow the rinsing instructions. Steam sterilising—whether in a dedicated unit or a microwave bag—is equally effective and faster. Dishwashers work too, but place your teething necklace on the top rack away from the heating element, and skip the rinse aid, which can leave a surfactant film on the surface. Avoid boiling water on the hob; prolonged high heat can eventually affect the silicone’s mechanical properties.

When to Retire a Chewable Jewel

Inspect your piece regularly under good light. Look for deep bite marks that have broken the surface, any persistent tackiness that doesn’t resolve with washing, or discolouration that suggests something has penetrated the material. With proper care, a medical-grade platinum silicone necklace should last through multiple teething phases—but if your baby has particularly sharp teeth or is an enthusiastic chewer, check more frequently. When in doubt, replace it. Peace of mind is worth more than squeezing extra months from a piece of jewellery.

FAQ

Is a BPA-free teething necklace automatically safe?

No. BPA-free only means the product doesn’t contain bisphenol A specifically. It could still contain related compounds like BPS or BPF, along with phthalates or industrial fillers. Always check what the product is made of, not just what it’s free from. Pure platinum silicone avoids the bisphenol family entirely.

How can I tell if a silicone bracelet is genuinely medical-grade?

Ask the brand for batch-level certification. Medical-grade platinum silicone should be tested to USP Class VI or ISO 10993 standards, and reputable companies keep this documentation. At home, try the pinch-and-twist test: pure silicone whitens briefly under stress and returns to colour immediately. A chemical smell or high-gloss shine are warning signs.

Does Milton sterilising fluid damage silicone jewellery?

No, when used correctly. Milton cold water sterilising is gentle on platinum silicone at room temperature. Follow the dilution instructions on the bottle, respect the recommended soaking time, and rinse thoroughly afterwards. Avoid leaving pieces in solution for extended periods beyond what the manufacturer advises.

Why do some high-street teething necklaces cost so much less?

The price difference usually reflects the silicone grade and quality control. Budget pieces often use industrial or low-grade food silicone with fillers to reduce material costs, and they may skip the expensive biocompatibility testing that medical-grade products require. Retailers like Boots and Mothercare stock a range of options, but price point often correlates with material purity.

How long does a chewable jewel last before it needs replacing?

With proper care, a medical-grade platinum silicone necklace can last through multiple teething phases—often a year or more. Inspect it regularly for deep bite marks that break the surface, persistent tackiness, or unexplained discolouration. Replace it immediately if any of these signs appear, regardless of age.

Trusting the source of the silicone is the ultimate peace of mind for a mother. When you know exactly what’s resting against your baby’s gums—right down to the curing process and the batch certificate—the marketing noise fades away. What’s left is the quiet, calm moment of connection: a soothed baby, a necklace that’s doing its job, and the certainty that you didn’t compromise on something that matters.