Some seem to have found a way to break a common compulsive habit.

Nail biting, medically known as onychophagia, affects more people than many realize. According to EBSCO data, roughly 20% to 30% of people worldwide bite their nails regularly.

The Cleveland Clinic classifies chronic nail biting as a type of body-focused repetitive behavior that can overlap with obsessive-compulsive disorder, and notes that many people “can’t stop the behavior on their own. However, nail-biting deterrents are a simple and affordable way to try and break the habit, and some people say they’re quite effective.

One of the most popular options is Sisquoc Healthcare’s nail biting deterrent polish that retails for about $19 on Amazon. Impressively, it has racked up thousands of rave reviews. It’s designed to make nail biting unpleasant by coating nails with a foul-tasting, invisible layer.

And, while the flavor is intentionally “awful,” reviewers say that’s exactly why it works.

“This product works by coating your nails with a bitter-tasting layer. Honestly, it’s like accidentally spraying cologne in your mouth,” one person said.

“The moment you try to put your nails between your teeth, that disgusting taste hits you and won’t go away until you brush your teeth,” they continued.

The treatment is said to be as safe for both children and adults, recommended for ages 3 and up. According to the brand, it can also help discourage thumb-sucking. And while results vary, many users report seeing progress within just a few weeks.

Applying it is quick and easy: It goes on easily, dries clear and the brand notes it won’t stain skin, clothing or furniture. You can even apply regular nail polish over it without affecting the bitter coating.

Each application lasts about six to eight hours before it needs to be reapplied.

This article was written by Miska Salemann, New York Post Commerce Writer/Reporter. As a health-forward member of Gen Z, Miska seeks out experts to weigh in on the benefits, safety and designs of both trending and tried-and-true fitness equipment, workout clothing, dietary supplements and more. Taking matters into her own hands, Miska intrepidly tests wellness products, ranging from Bryan Johnson’s Blueprint Longevity Mix to the viral Oura Ring to Jennifer Aniston’s favorite workout platform – often with her adorable toddler by her side. Before joining The Post, Miska covered lifestyle and consumer topics for the U.S. Sun and The Cannon Beach Gazette.