Mar 072014

Various examples of porous sex toys - Fleshlight, Screaming O cock ring, Evolved Novelties vibrator, Vibratex Rabbit HabitSafety of sex toy materials is not exactly a black and white thing. People really focus on phthalates an awful lot; and while I absolutely agree that they’re terrible, they’re not the only thing about a sex toy that can harm you. There are many nasty chemicals. Heavy metals like cadmium can be present. The issue with VOCs can exist without phthalates coming in to question. And then there’s all these thousands and thousands of porous sex toys saturating the market.

But people just don’t seem to understand or care much about porosity outside of our little sex educator/reviewer bubble.  Why? Because they don’t know it is even a thing.

We’ve been told that materials like TPR/TPE and ‘Elastomer’ are “not as porous” as PVC/jelly/rubber/vinyl/cyberskin. The latter is heavily linked to phthalates and other toxic chemicals, while the former is usually regarded as a middle ground – it’s usually accompanied by descriptions such as “body-safe” because it supposedly is free from the super-harmful chemicals and has smaller pores than the other stuff. Still porous, but less so. Of course, all of these materials are still unstable to various degrees and will break down over time. Case in point? My jar of melted sex toys. Only one item in that jar contains phthalates. None of these materials mentioned above can be shared or sanitized.

Yet people still flock to them for their squishy, realistic feel and affordable price tag.

Why Should You Care About a Porous Sex Toy?

Bacteria, mildew, fungus etc can enter the pores of these materials and make a home. The more porous the material is, the easier this will happen. No studies have been done on the effects of using a sex toy that mildewed. My brand of common sense says that some molds can kill you or make you crazy so why would I want to take any risk of putting mold spores in contact with my very sensitive mucous membranes? I don’t. But not everyone sees it this way, because they don’t understand how it works. Let’s say you have a cyberskin dildo. You wash it, and let it sit on the sink for a day or three or you put it away before it has dried. You could have just created a breeding ground for mold. I’ve seen it happen and I’ve heard about it happening. The same can be applied to bacteria and fungus—if you have vaginitis or a yeast infection that’s not been cleared up before you use a sex toy, or you decide to use a toy anally as well as vaginally.

Washing the surface with anti-bacterial soap and hot water is not going to be enough, and will only clean the surface. The material breakdown of these unstable creations will happen, and the floodgates can open. When the mineral oil starts to sweat to the surface, who knows what it’s bringing with it. Or maybe there’s a teeny crack in the material that you don’t see–perfect hiding spot for bacteria that can duck out of the way of your quick cleaning job.

You just cannot clean these materials to a “clean” state. This is why we care so much about the non-porous materials like silicone, glass, stainless steel, and so on. I feel utterly safe in not cleaning my silicone dildo immediately after use, I know it can get sanitized clean later on. Nothing can be harbored in those pores. Yes, silicone still has pores but not big enough for bacteria, mold, mildew, etc. Big enough for odors to trap, yes.

The Problem

I can’t find any research on what harm might befall users of porous sex toys. I’d really love to see a crew of microbiologists closely examine under microscope just what is hanging out in the pores of the average sex toy. I have not located any studies or research on just what your chances are of getting sick from the things hanging out in those pores. For that matter, because these middle-ground materials are all accepted as phthalates-free, they’re flying under the radar.  No one is really looking closely at them, because they are not the squeaky wheel.

And of course, no one is doing any research (to my knowledge) to find out just how easily the mold spores or bacteria can exit the pores and how sick you can get. I do know from my “jar of horrors” that even the non-toxic yet porous TPR/TPE toys are breaking down. During the process of breaking down they are releasing the mineral oil and that can release the bacteria/mildew that was living rent-free in there.

What I would really like to see is for the more common materials to be examined under a microscope and find out from an unbiased source just how porous each one is. Are the pores big enough to harbor mold, mildew, bacteria, fungus?

Material Geek Info

Part of the problem in this industry is the erroneous naming of material. Screaming O used to call their clear, stretchy material “SEBS Silicone”. They claimed that SEBS stands for “styrene-ethylene/butylene-styrene”. However, I’d flame-tested that material and the test showed me that there’s no silicone in there – so when they made their self-testing results public and clarified that no, there’s no silicone present in those rings, it was a fact I already knew but was glad to see finally acknowledged. Many manufacturers  (for some reason, particularly newer manufacturers of male toys) use carefully guarded trade secret materials that they won’t reveal the make-up of. I don’t LIKE that, but I understand it. It’s a recipe. They don’t want another company coming out with something just like theirs. Theirs won’t be special anymore.

The term “Elastomer” is weird, because that’s like calling something “Liquid” as the name. Lots of things are elastomers. There is a difference between TPR and TPE, yet those names are used interchangeably. It seems that TPE may be more stable than TPR, and it also seems that there can be a “medical grade” TPE. I have seen toys that claimed to be a “non-porous” TPR, but research online seems to point to TPE being the more common material overall, especially in the higher quality end of things. Even silicone has pores, but they’re small enough that the only things getting in are dyes and odors (yes, a silicone butt plug, if used long enough and not boiled now and then, can retain a bit of an odor). I also see some companies refer to items as being “TPR Silicone” which is about as ridiculous as “SEBS Silicone”. I can’t find any data yet to support this either way, but it doesn’t seem very likely to me that one would blend a TPR or TPE with silicone, since silicone is expensive and a blend would retain absolutely none of the beneficial properties of silicone. Also, everything I’ve seen that is labeled “TPR Silicone” is jelly-soft and crystal clear – neither is an attribute of silicone.

 How Can a Sex Toy be “Body Safe” and Porous?

You’re going to see a lot of retailers listing items that I’ve said are porous as “body safe”. The definition for “body safe” in this context refers to the lack of phthalates, latex and harmful chemicals. In my opinion, if the toy has the ability to turn on you, so to speak, by housing and spreading microorganisms, it doesn’t feel technically “body safe” to me but this is a fine line and you’ll find sex educators on both sides of it.

Keep this in mind: just because it is porous doesn’t mean it is toxic. All toxic toys are porous, but not vice versa. I also have to recognize that some people do not have the privilege of affording a non-porous material. I also have to recognize that very very few pure silicone options exist for penis toys like sleeves/masturbators. Fleshlight and all of the Tenga products show no evidence of being toxic (nor have I seen these break down and become greasy with oils being leached), yet they are porous. Fleshlight is more porous than the Tenga material, and more delicate. Hell you can’t even clean it with soap. My husband tried one silicone sleeve and it was not pleasurable – not enough give/plush. So while we can avoid the porous issue for those looking for external or internal vibrators or dildo, those who want to use a masturbation sleeve are shit out of luck. So just because it’s porous, doesn’t mean I’m going to 100% shun it – it depends on what is available as an alternative to either the type of item or your budget. I am going to educate the hell out of you, though, and advise you to purchase from a better manufacturer than California Exotic Novelties or Pipedream.

For example, while companies like Vibratex or Evolved do offer many porous items, I’ve never heard that they have the markers of a toxic toy. While I don’t relish the thought of someone buying an Evolved Novelties vibrator like this one, I know that for those just getting into owning sex toys, the thought of dropping $75+ on a silicone vibrator is scary. There are more and more affordable, truly body-safe (non-porous) sex toys coming on the market, as this list can attest to.

What to Do

As a retailer, if you’re going to carry porous items then please have something on the site to educate the buyer. Alert them that the item is porous and needs special care and attention. Make note that condom coverage doesn’t guarantee anything, and note that porous materials and latex condoms are a bad match – only polyurethane condoms will do. Educate them as to what will happen over time to the material, because of the unstable nature of it – and that when the inevitable happens, they should replace the toy.

As a consumer, if you can’t afford to buy something in a safe material yet, or are new to sex toys and want to see what styles and sizes you might like before you save up for a silicone version, then at least be safe. Consider a polyurethane condom. Clean it immediately before and after each use, and be vigilant – if you see any dark spots, replace it. If the material starts to feel greasy, replace it. In fact, if you’ve owned it for more than 6 months, replace it. Don’t ever store it in the dark until it’s completely dry.

Every year we are seeing more and more companies creating affordable silicone sex toys.


Thanks for sticking with me on this post, I know it was a long one! Tell me how you feel about porous materials, do you agree or disagree with my opinions? Also, I’m learning and educating myself as I go along. The world of sex toy materials is a vast, complicated one. If you’ve run across conflicting information that seems valid, please share it with us!

 **For some reason, the comments on pages didn’t transfer to  Disqus, but these are comments I received on the page that show that people don’t share my mindset immediately of “ew mold”:


  • Great post. Very informative. Sybian claims to be using a TPE material branded as C-Flex and according to the manufacturer’s website, the C-Flex is “less permeable than silicone”. That sounds like they’re saying that it is less porous than silicone. So, that might be one of those cases of medical grade TPE but I just cannot see medical grade TPE tubing leaching out mineral oil.

  • Has anyone ever had issues with leaching on the Sybian stuff? It could be too that Tenga is using a medical grade TPE, hence why I’ve not seen any material breakdown there.

  • Good question. So few people have Sybians that you don’t hear much about user experience. I know Epiphora got one with attachments. Might be interesting to monitor those for signs of break down.

  • PandorasBox

    Awesome post! I try to only stock non-porous toys for my home party business, even though right now that means there are some things I cannot carry (men’s toys mostly). Finding reasonably priced toys is a huge challenge especially in silicone, but plastic and glass toys are generally pretty affordable.

  • I’d suggest judiciously allowing some of the “lesser evil” porous men’s toys in to the mix if you can because otherwise…’re right there’s nothing out there. Of course for me, that means smaller brands OR brands like Fleshlight/Tenga but not the huge commercial brands with the cheap crap.

    What do your clients feel is reasonable? I have been seeing some mid-range silicone stuff popping up more.

  • PandorasBox

    Most of my silicone vibes are in the $50-$100 dollar price range, which seems to work pretty well. I have pretty high standards about what makes a good vibrator and it is more than just the materials to me, so that presents its own challenge. I have a growing pile of discards that just don’t make the cut when I order a demo model.

    The mens toys are really the biggest problem. There are some awesome silicone c-rings out there which is great. I think Tenga will probably be my next addition, but I may give Fleshlight a closer look.

  • I meant to comment on this post a while back…I’m so glad you posted it. I agree–to me, toys that are porous are NOT really body safe, since you can potentially spread infections either to yourself or to others. And as for the masturbator thing…you’re right, there just aren’t really any options out there… I’d love to see some silicone masturbators that actually feel good on the market.

    Thanks for this post Lilly!

  • Talia

    First of all, let me thank you for your blog. I consider myself fortunate because I’ve discovered it very early when I became interested in sex toys, so I didn’t buy a lot of porous stuff first. I’m lucky in that I can afford silicone – if a silicone alternative exists, which just isn’t always the case (I love my stupid, ugly, impractical butterfly!)

    Therefore I wonder: What happens when one boils a rubber toy for half an hour? Or even an hour? Or what about steaming? My vet tells me that even possibly sick chickens (salmonella!) are safe to eat after simmering for an hour.

    Or what about leaving the toy in bleach or 70 % alcohol for half an hour or so? Within 20 minutes or so alcohol actually does disinfect skin, which definitely is a porous material (I learned it the other way round: Wiping off a horses neck with alkohol just before giving an injection is not very useful, you’d have to wait for 20 minutes for the alcohol to do its job).

    I have difficulty believing it would really be impossible to sanitize porous toys if one put ones mind to it. On the other hand – couldn’t there be invisible tiny cracks in silicone as well? I have a feeling more research should be done…

  • There could be cracks in silicone, yes, but the material itself “repels water” according to recent information which is one reason why nothing can make a home in the pores – no food, no microorganisms. I have read that a long alcohol soak on some of these materials could be bad, so I don’t like recommending it for anything other than a surface swipe. As for the topic of “couldn’t you just soak it long enough or boil it long enough” well, for boiling, only silicone can handle that. The other materials will melt with the heat. Secondly, we cannot know if it will help or not….so why would one bother to take the risk, when silicone is available and can be had for an affordable price by some companies? We would need a full lab to run tests over time and there’s no incentive for anyone to run studies like this on sex toys because, well, sex toys. Stigma, etc. We would need a microbiologist, funding, etc.

  • Talia

    I think it would have to be a very shitty plastic indeed to melt in boiling water! (Which is not to say that there are no sex toys made from shitty plastic out there…) I mean, my steamer is made from plastic – and steam is by definition hotter than boiling water. I’ve boiled a plastic recorder (the musical instrument) without damaging it. Not to mention that most plastic kitchen dishes/tools handle boiling water without problems (packaging, like water bottles, will most likely change its shape. Probably due to its ridiculously thin walls).

  • There are different kinds of hard plastic, and I’ve always been told by manfacturers not to boil the sex toys that have hard plastic. But when I’m referring to the ones you talk about, I’m not talking about hard plastic. The thermoplastics, PVC, etc are usually softened and this makes them different from the plastics you’re used to in the kitchen. This makes them unstable. Boiling would definitely not help the situation for these.

  • Great post! Please keep up the good work. It’s greatly needed.

  • LtSurge659

    What does this mean for Sex Dolls, then? Considering how astronomically expensive Silicone dolls are compared to TPE.

    I’m new to toys, and while I recognize Silicone’s apparent superiority over TPE, I’m not sure I want to put down the money I could put into a new car, considering my method of cleaning and storing smaller things seems to work for me…

  • 롤롤

    Dear lily: I’m really shocked at your articles include this one. I’ve never cared about materials of my sex toy before.

    Can I translate this article in korean and post it on my personal blog first and korean web forum of women??

    Of course I’ll link your blog on the top and let you know when I finish translation and uploading on web. There is no regulation on sex toys in korea, and most of products in market are from china. I feel like other korean women should know about this matter of materials too.

  • Fritz

    California Exotic Novelties always did make crappy toys, aside from the potential health hazards cited on this website the feedback left by buyers of their products tends to be chalk full of complaints about poor quality, and short life, sometimes tearing up after one or two uses. Pipedream I have no idea about, most of their products tend to be oriented towards women, and as a straight male I really have no personal interest in either dildos, but plugs, or beads.
    I do have a few questions though, you have mentioned Fleshlight and Tenga products, but I
    was wondering about a product line of male masturbators sold under the Doki Doki name? The material seem to be similar to Fleshlights and the Tenga 3D, I can’t remember what they call the material by it’s less sticky then a Fleshlight.
    With regard to Tenga products, they do have a line of silicone based male masturbators. The Flip Holes and the Flip Airs are both silicone based and can be cleaned with soap and water. One convenient feature is that they both have a hinge so you can open them up and clean them, with sleeve style ones some can be turned inside out for cleaning, like the Tenga 3D, but not on others.