A nail polish designed to taste unpleasant is emerging as a popular tool for individuals seeking to overcome nail biting, a compulsive habit medically known as onychophagia.
According to EBSCO data, nail biting affects an estimated 20% to 30% of the global population. The Cleveland Clinic categorizes chronic nail biting as a body-focused repetitive behavior, which can sometimes be associated with obsessive-compulsive disorder. Many individuals find it difficult to cease the behavior independently.
Sisquoc Healthcare's nail biting deterrent polish, priced around $19 on Amazon, has garnered thousands of positive reviews for its effectiveness. The product works by applying a bitter-tasting, invisible layer to the nails, intended to make the act of biting them aversive.
Reviewers describe the taste as intensely unpleasant. "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," one user reported. This strong deterrent effect is cited as the primary reason for its success.
The deterrent is formulated for safety and is recommended for individuals aged three and above, with applications for both children and adults. It is also noted to potentially help discourage thumb-sucking. While results can vary, many users have reported noticeable progress within a few weeks of consistent application.
Applying the polish is described as a simple process. It dries clear and is said not to stain skin, clothing, or furniture. For those who wish to maintain a cosmetic appearance, regular nail polish can be applied over the deterrent without compromising its taste-altering properties. The brand states that each application typically lasts between six to eight hours, requiring reapplication to maintain its effect.