You apply Stop on the nails. Mavala Stop has a bitter yet harmless taste that stays on the nails or thumbs for a day or two. The bitter taste will take away the desire to continue the habit. It is perfectly safe for children, too. STOP has the appearance of clear enamel. STOP can be used by adults and children.
How to Use Apply a coat over the entire nail, thumb, pen, etc and allow to dry. Repeat the application every two days. Continue the treatment until nail biting or thumb sucking habit has been stopped. Never wash hands immediately after application.
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