BITTEN NAILS - GROWTH PODERM oil-serum is a concentrate of active ingredients that repair, strengthen and stimulate growth. It improves the appearance of bitten nails and protects them. It provides a fast, effective solution for restoring beautiful, long, flawless nails. It's a natural treatment that helps combat onychophagia, the scientific definition of nail biting. Its main purpose is to help the nail growth, not to stop nails from being bitten. This unique formulation penetrates the nail and its surrounding area. The results are quickly visible, leaving your nails strong, healthy, smooth and shiny.