Discourages fingernail & cuticle biting and promotes nail growth. Toluene, Formaldehyde & Dibutyl Phthalate Free Odorless and invisible yet intensely bitter, this formula is designed to help stop biting nails and cuticles. This non-gloss, hydrating, nitrocellulose ingredients to help promote fast and healthy nail growth. May also be used on children as a deterrent for thumb sucking, with parental supervision. .