The OPI Nail Envy Nail Strengthener is a liquid vegan formulation designed to provide tri-flex technology for stronger nails. With a volume of 15ml, this nail strengthener from OPI is perfect for enhancing the natural strength of your nails. The product comes in a new boxed packaging with a period after opening of 18 months, ensuring that it is fresh and effective for use. Ideal for those looking to improve the overall health and appearance of their nails, the OPI Nail Envy Nail Strengthener is a reliable choice for achieving beautiful and durable manicures and pedicures.