Body-Safe Sex Toy Materials: Silicone vs TPE vs ABS vs Steel vs Glass

Almost every real safety question about a sex toy comes down to one property: porosity. A non-porous surface has no micro-channels for bacteria, mould or fluid to settle into, so washing it actually removes what is on it. A porous surface does have them, and no amount of scrubbing reaches all the way in. Everything below follows from that single distinction.

What does 'body-safe' actually mean?

Sex toys are not regulated as medical devices in the US, the UK, Canada or Australia. There is no agency checking that a toy sold as "silicone" is silicone. So "body-safe" is not a certification you can look up — it is a description of the material itself, and it rests on three things:

• Non-porous — the surface can be cleaned completely rather than just superficially.
• Chemically stable — it does not shed plasticisers or leach softeners into skin and mucous membrane over time.
• Inert to body fluids and to the lubricant you pair with it — it will not swell, gum, cloud or degrade in contact.

Materials that fail the third test are not automatically dangerous, but a toy that degrades develops a tacky, broken surface — and a broken surface is a porous one. Degradation and safety are the same conversation.

Which sex toy materials are body-safe?

Silicone

Silicone is the default for a reason. It is non-porous, chemically inert, holds body heat, comes in any firmness from squishy to rigid, and — if there is no motor inside — can be boiled or run through a dishwasher. It is the one material that is genuinely easy to keep clean.

The one caveat is silicone-based lubricant. Some silicone can swell or go tacky where a silicone lube sits against it; a lot of modern platinum-cure silicone tolerates it perfectly well. The honest advice is not "never" — it is patch test first: a dot of lube on the base, left half an hour, wiped off. If the surface is unchanged, you are fine. If it feels sticky or looks dulled, switch to water-based. The lube compatibility chart covers every other pairing.

ABS plastic

The hard, smooth plastic used for bullet vibrators, wand handles and the rigid parts of a lot of toys. Non-porous, body-safe, entirely lube-agnostic and easy to wipe down. It transmits vibration more efficiently than soft silicone does, which is why so many strong bullets are hard-shelled rather than squishy.

Stainless steel

Non-porous, effectively indestructible, and sterilisable by boiling. Steel takes temperature well — a few minutes in warm or cool water changes the sensation completely — and its weight is the point rather than a drawback. Look for 304 or 316 grade. If a steel toy has a visible seam, a plated finish or a coating, that coating is the surface you are actually using, and coatings chip.

Borosilicate glass

Borosilicate is the same glass used in laboratory and oven-safe glassware: it handles thermal shock, so it will not crack when you warm or cool it. Non-porous, sterilisable, and completely lube-agnostic. Inspect it before every single use. Run a finger over the whole surface — any chip, crack or rough spot means it is finished. Do not sand it, do not use it once more. That is the only real rule with glass, and it is not negotiable.

TPE, TPR and jelly

TPE (thermoplastic elastomer) and TPR (thermoplastic rubber) are soft, stretchy, cheap and porous. Under magnification the surface is full of tiny channels; bacteria settle into them and washing does not reach. They cannot be boiled — they will deform — and they cannot be sterilised. Jelly rubber and soft PVC are the older versions of the same problem, historically softened with phthalates, and they are the materials most likely to go sticky or smell of solvent.

How can I tell what a toy is really made of?

There is no lab test you can run at home, but a few checks catch most mislabelling:

1. Read the exact wording. "Silicone" is a claim. "Silicone-*like*", "silicone blend", "soft touch" and "skin-safe material" are not — those phrases usually mean TPE.
2. Smell it. Body-safe silicone, steel and glass are close to odourless. A strong chemical or plastic-shop smell points to a softened porous plastic.
3. Check the drag. Silicone grabs slightly against a dry finger. TPE and jelly feel slick, greasy or oddly wet.
4. Watch it over time. A toy that becomes tacky, weeps a film, or melts where it touches another toy in a drawer is porous. Non-porous materials do none of those things.
5. Price-sanity-check it. Real medical-grade silicone costs meaningfully more than TPE. A large, entirely-"silicone" toy at a very low price is usually a blend.

What should I avoid outright?

• Phthalate-softened PVC and jelly. The oldest and worst of the porous group; also the most likely to smell and go sticky.
• Coated or painted surfaces, unless the coating is itself a body-safe material — a chipped coating is a porous, sharp edge.
• Porous materials shared between partners without a condom, or moved between anal and vaginal use without one.
• Anything anal without a flared base. This is not a material question but it is the single most common cause of avoidable harm with a toy, so it belongs on any safety list.
• Household improvisations. Unfinished wood, unsealed 3D prints and craft-grade resin are all porous and often chemically unstable.

Does material change how I clean it?

Yes — that is most of the practical difference. Non-porous and motor-free means you can boil it. Non-porous with a motor means soap, warm water and careful drying, never submersion unless it is rated waterproof. Porous means a surface wash and a condom, because sanitising is not available to you at all. The full method for each material is in how to clean sex toys.

The bottom line

If you want one rule: buy non-porous. Medical-grade silicone, ABS, stainless steel and borosilicate glass can all be genuinely cleaned, they last for years, and none of them will degrade against your skin. Porous toys are usable with a condom and a shorter replacement cycle, but they are a compromise, and it is worth knowing you are making one. When you are ready to shop, our collections are the place to start, and pairing anything new with the right lubricant matters more than most people expect.