Why Medical-Grade Silicone Actually Matters

Most people, when they pick up a silicone vibrator for the first time, assume all silicone is basically the same. It isn't. The difference between cheap silicone and medical-grade silicone is not a marketing distinction — it is a difference in what the material is made of, how it was processed, and what your body can safely come into contact with.

This piece is a short explanation of what the difference actually is, why it matters, and how you can tell the real thing from the cheap imitation.

What "medical-grade silicone" actually means

Silicone is a family of synthetic polymers. Not all silicones are meant for body contact. A "medical-grade" silicone has been tested against standards like ISO 10993 or USP Class VI — which measure cytotoxicity (will it kill cells?), irritation (will it inflame skin?), and sensitization (will it trigger allergic response?). If a material has passed those tests, it can be called medical-grade.

What gets sold as "silicone" on unregulated marketplaces often hasn't been tested against any of these. It may contain fillers — cheaper rubber compounds, plasticizers, or colorants — that make up a significant portion of the final product. Some of these additives are known to be harmful.

The phthalate problem

Phthalates are a family of chemicals used to make plastics more flexible. They are common in cheap toys. They are also endocrine disruptors — the medical community has linked them to hormonal disturbances, fertility effects, and developmental issues at chronic exposure levels. The EU has restricted their use in children's products and in many consumer goods; the US has followed in some categories.

Intimate wellness products sit in a category where this matters more than most. Any product that comes into direct, prolonged contact with mucous membranes — as intimate products do — presents a different absorption profile than something that touches your hands or arms. Phthalate-free is not a nice-to-have here. It should be the baseline.

Porosity: the hidden issue

A material is porous if it has microscopic channels that can trap moisture, bacteria, or biofilm. Medical-grade silicone is non-porous. Many cheap materials — rubber, jelly, "cyberskin", or poorly-cured silicone — are porous in ways you cannot see with the naked eye. This matters for two reasons:

• Non-porous materials can be actually cleaned. Warm water and soap, or a dedicated toy cleaner, will reach every surface.
• Porous materials hold onto bacteria, body fluids, and mold even after cleaning. No amount of washing fully sanitizes them. Over time, they become a source of infection risk.

This is the reason all intimate wellness brands we trust — Dame, Maude, Lelo, elynu included — use non-porous materials exclusively. It is not a luxury. It is hygiene.

How to tell the real thing

On a product page, look for three things: an explicit claim of "medical-grade silicone" (not just "silicone"); a claim of "phthalate-free" and ideally "BPA-free"; and, if available, a reference to ISO 10993 or USP Class VI testing. In the absence of any of these — especially when the product is priced suspiciously low — assume the worst.

You can also feel the difference. Good silicone has a soft, slightly grippy, "second-skin" quality. It does not have a strong chemical smell. Cheap silicone often has a distinct plastic or rubber odor that dissipates only slowly. If it smells wrong when you open the package, trust that signal.

What we use

Every piece in the elynu collection is built from liquid silicone in a seamless, fully-encapsulated construction — phthalate-free, BPA-free, and certified body-safe. We don't consider this a premium feature. We consider it the floor.

The material your product is made of is not a feature. It is a promise about what you are willing to put into the world.