Live test: The intimate trimmer Billy submerged for 3 days nonstop, the ultimate test

A billy spends 3 days underwater at the International Lingerie Fair 2026: the ultimate test

We’ve always told you: billy is 100% waterproof. Truly. Completely. Without compromise.

But we know that sometimes words aren’t enough. So we took advantage of the International Lingerie Fair 2026 in Paris to check: we left a billy fully submerged in water for 3 days straight, without taking it out.

Watch the video

billy’s challenge: 72 hours underwater

We plunged a billy into a clear vase on our stand. Fully submerged. Not just a few centimetres, no. Without any special protection, without blocking the USB-C port, without doing anything special. Totally underwater, continuously, for the three days and three nights of the fair.

72 hours non-stop underwater. No extra protection, no special treatment. Just a normal billy, the one you can order on our site, plunged in water as it would be in your shower.

Visitors to the fair could see it floating calmly all weekend. Some were sceptical. Others placed bets. A few even asked if it was really a genuine trimmer or just a display model.

The moment of truth

Sunday evening, end of the fair. We take billy out of its three-day bath in front of the last visitors and cameras.

We wipe it quickly. We press the button.

And it starts immediately. Perfectly. As if it just came out of its packaging.

The blade spins at full power, the LED light works perfectly, the battery indicator still shows its charge. Everything is working. Zero problems. Zero failure.

We even trimmed some hairs to be sure (yes, we had willing models ready). Result? The cut is as precise and effective as with any billy that has never seen water.

Why this test?

Because when we say waterproof, we want it to be clear. It’s not marketing, it’s a fact.

You can leave your billy in your shower permanently without worry. You can use it under the water jet. You can rinse it completely after each use. And even if it falls into your filled bathtub while you relax, no problem.

It’s not a trimmer that “resists splashes” or is “usable in a damp environment.” It’s a trimmer made for water. For intimate areas, for the shower, for total ease.

Proof in video

See for yourself. Three days underwater, taken out of its jar and it works perfectly. No trickery, no alteration, just billy doing what it’s made for ;)

So yes, you can really leave it in your shower without a second thought. We just proved it for 72 hours straight at the International Lingerie Fair 2026.

Thanks to everyone who came to see us in Paris. And for those still wondering if billy is really waterproof... you have your answer.

Your hairs, your style, your shower. billy is here for that. ✨