The Mavala Stop Pen Applicator is an innovative solution designed to help break the habit of nail biting and thumb sucking. Its unique formula features a bitter yet harmless taste that discourages the urge to put fingers in the mouth. The convenient pen applicator allows for precise and easy application directly onto the nails and cuticles, making it suitable for discreet use anytime, anywhere. Regular application helps to condition nails and cuticles while reinforcing a positive habit change for healthier-looking nails.