Our anti-biting nail care Bitter Water contains bitter melon extract and Coptis chinensis extract. It can be an effective reminder of bitter ingredients and reduce nail biting behavior. Bitter melon extract provides refreshing feeling and Coptis extract enhances protective effect. Its use method is very simple: evenly apply the product to children's nails and surrounding skin, wait for about 30 seconds to dry, bitter taste can make children reduce the frequency of biting nails, and gradually change bad habits. You can wash it with soapy water. It also nourishes and enhances nail elasticity.