OPI Nail Envy Nail Strengthener in the Dry & Brittle formula (NT131) is a moisturizing nail treatment specifically designed for dry, brittle nails prone to peeling, splitting, and breakage. Part of OPI's best-selling Nail Envy treatment line, it hardens nails while keeping them flexible.
How to use: Apply 2 coats on day one, then 1 coat every other day. Remove and restart weekly for best results.