Lesfy Pet Brush Review: 4 Weeks on a Healthy Yor

A grooming device is easy to judge when a dog has an obvious coat problem. It is harder when the dog already has healthy skin and a well-maintained coat.

That was the case with Louie, my Yorkshire Terrier. He does not shed much, had no visible skin lesions, and already had a regular home grooming routine before I started using the Lesfy OH-Radical Pet Skin Care Device.

After four weeks, I would not describe the Lesfy as a brush that created a dramatic before-and-after change. Its strongest point was different: it made it easy to add surface hygiene care to our regular post-walk brushing routine without adding another complicated grooming step.

How Is the Lesfy Different From a Regular Pet Brush?

At first glance, the Lesfy pet brush looks like a handheld dog brush. It can remove loose hair and debris from the coat, but the device also has an OH-radical hygiene-care function.

When the device is turned on, a blue light appears in the center. According to the product information, its technology generates OH radicals from water and uses them for surface hygiene care before they react and return to water.

The manufacturer also states that the device has Korean KC certification and reports 99.9% hygiene-care performance in testing against Pseudomonas aeruginosa and Staphylococcus aureus.

That distinction matters. The 99.9% figure is a product testing claim; it is not something I could visually measure on Louie at home, and it should not be interpreted as a guaranteed skin-health result.

For me, the practical difference from a regular brush was that I could brush the coat while using the device’s hygiene-care function at the same time.

How I Tested the Brush for Four Weeks

Louie already had a fairly intensive grooming routine. I normally use a carbonated spa treatment, shampoo, conditioner, a mud pack, and a daily grooming mist.

For this four-week trial, I kept his usual carbonated spa, shampoo, and conditioner routine but stopped using the mud pack and daily mist. I wanted to see how his coat would do while I reduced some of the extra home-care products and used the Lesfy consistently.

This was a personal home-use test, not a clinical comparison.

On days without a walk, I used the brush for about two minutes once a day. After walks, I slowed down and brushed his body for about five to ten minutes, treating it more like a post-walk coat-care routine than a quick detangling session.

Was It Comfortable for a Sensitive Dog?

Louie is sensitive to unfamiliar grooming tools and normally prefers silicone brushes, so acceptance was one of my biggest concerns.

The Lesfy has a curved brush surface that followed the shape of his body fairly well. The tips felt rounded rather than sharp, and I could hold the device comfortably with one hand.

The product is also designed to operate at 50 dB or less. The sound was not loud in our home, and Louie gradually accepted it without the resistance I sometimes see with unfamiliar grooming equipment.

During the first week, I intentionally kept sessions short. By the second week, taking out the Lesfy once a day had become a normal part of our routine.

What Changed After Four Weeks?

The most important result was actually the lack of a dramatic change.

Louie started with a healthy coat, so I was not expecting the device to suddenly make his fur look completely different. What I wanted to know was whether his coat would remain comfortable while I removed the mud pack and daily mist from his routine.

Over the four weeks, I did not notice his coat becoming unusually dry or rough. Close-up photos also did not show new visible lesions, and his coat continued to look healthy.

I cannot say that the Lesfy alone caused that result. His shampoo, conditioner, regular grooming, diet, and individual skin condition all remained part of the picture.

What did change was how simple post-walk care felt. Before using the device, I often worried about dust and outdoor contaminants remaining on his coat and sometimes used a mist after walks. With the Lesfy, I could brush away surface debris while using the hygiene-care function in the same step.

Cleaning the Brush Was Simple

A daily grooming tool also needs to be easy to maintain.

The Lesfy has a removable magnetic brush cover, so the brushing surface can be separated when collected hair needs to be removed. That design should be particularly convenient for dogs that shed heavily.

Louie is a Yorkie with relatively little shedding, and his back coat is kept short, so I never collected a large pile of loose fur. If your main goal is seeing large amounts of shed hair come off your dog, my experience with Louie does not provide a useful test of that feature.

Who Is This Pet Brush Best For?

After four weeks, I think the Lesfy makes the most sense for owners who want to combine ordinary brushing with an additional surface-hygiene step, especially after walks.

It may be appealing if:

• your dog already needs regular brushing after outdoor activities;
• you prefer one device instead of adding several grooming products;
• your dog is sensitive to noisy grooming equipment;
• maintaining an already healthy coat is more important than chasing a dramatic cosmetic change.

It may be less compelling if you only need a basic brush for removing loose hair or if you expect visible skin or coat improvement from the device alone.

For Louie, the Lesfy did not replace bathing or his basic grooming products. Its value was in making daily and post-walk coat care easier to maintain consistently.

That is also how I would judge it before buying: not as a treatment device or a shortcut to perfect skin, but as a grooming tool with an added hygiene-care function that can fit into an existing home-care routine.