Give your nails the care they deserve with OPI Start To Finish Base Coat, Top Coat, and Nail Strengthener. In a small and mighty bottle, OPI Start To Finish Formaldehyde-Free Formula acts both as a base and topcoat as well as a gentle nail strengthener. Made with natural ingredients, this formula is safe for those with sensitive skin and eliminates the need for harsh chemicals. Keep your nails strong and healthy all season long with our easy-to-use trio. This formula provides maximum strengthening with hydrolyzed wheat protein and calcium for harder, longer, and stronger nails. It also helps to prevent peeling and chipping. So, if you''re looking for a nail strengthener that will provide you with the results you need, look no further!