Mavala Stop discourages nail biting and thumb sucking, helping to break bad habits and maintain nail health. __Benefits:__ - Mavala Stop 5ml helps to prevent nail biting and thumb sucking - Bitter yet harmless taste - Appears like clear enamel on nails - Helps to break bad habits - Ideal for adults - Also formulated for children (over 3 years old) Got a nervous nail biting habit? Mavala Stop 5ml is designed to discourage nail biting and thumb sucking. With a bitter yet harmless taste and the appearance of clear enamel, Mavala Stop will help to break bad habits. Perfect for adults and children (over 3 years old), Mavala Stop is an easy-to-use nail treatment.