Tried and Tested: Byeleaf Toothbrush by Dr. Sul Chae-hyun for Dogs

© Text & Photos by Yoo Yun

Right after food quality, dental care is my top priority for Louie. I used to be satisfied with the Curaprox toothbrush and Virbac toothpaste, as I mentioned in a previous post. But when I heard that vet Dr. Sul Chae-hyun had designed a new dog toothbrush, I decided to give it a try. It seemed more hygienic, and since I replace Louie’s toothbrush monthly anyway, a 3-time disposable sounded interesting.

Did I Really Buy the Byeleaf Toothbrush?

Yes. Dr. Sul is a widely respected animal behavior expert. I've subscribed to his channel for a while now and tried some of his pet products—some successful, others not. I bought this brush hoping it would offer better hygiene and gentleness.

Louie brushes twice a day—once with Virbac, and once with Black Sheep Organics toothpaste. That’s about 60 brushes a month, so I was eager to test the 3-use Byeleaf brush. Below, I’ll walk through the features and my honest experience.

Key Features of the Byeleaf Toothbrush (and My Thoughts)

Ergonomic Design

Supposedly shaped to fit a dog’s mouth with a no-slip grip and pen-like precision.

🔹Reality: The brush head is very short, so I had to press it in closer. Because it’s straight, it didn’t angle well against Louie’s teeth. It was harder to use than I expected—mainly due to the bristle design.

360° Bristles

Meant to reduce gum irritation during brushing.

🔹Reality: Louie didn’t bite it—just touched it to his teeth—and the bristles started peeling off immediately. That’s alarming.

Safe Materials

Claimed to be non-toxic.

🔹But here’s the thing: if a dog swallows it, is that really safe? Will it 100% pass through the digestive system with no harm? The brand says yes, but I remain skeptical.

A Closer Look at the Toothbrush

Top Head (4mm): For canines and front teeth. Covered in ultra-fine bristles, but not completely round—it's slightly flat.
Side Head (17mm): For molars.
The brush handle is flimsy, but it’s marketed as a 3-use disposable, so that’s forgivable.

Louie’s Experience

Used once—actually just 0.3 of a use—before the bristles started peeling.
Luckily, I noticed and stopped brushing immediately. Any longer and Louie could have been injured.

For reference: I don’t scrub hard when brushing Louie’s teeth. I gently sweep from the gums down, as you would with human brushing techniques.

Final Thoughts

Before I received mine, I saw a review from someone with a small dog like Louie who said their pup’s gums swelled and the brush nearly fell apart. I thought, “Maybe their dog chewed on it?”

Nope. Louie didn’t chew. Even just brushing lightly caused it to peel.

And the promotional GIFs show people aggressively scrubbing dog teeth! No wonder it falls apart. That’s not realistic or safe. This isn’t about dogs chewing—it’s about poor design.

Finishing this post with a photo of Louie pausing mid-brush, wondering why I suddenly stopped. I was too shocked to continue.

Original Post (Korean):
https://blog.naver.com/heartkeepers/223700462477