This SOS Nail Hardener by Manucurist is specifically formulated to strengthen and revitalize weak or damaged nails. Enriched with a potent combination of Vitamin C and Pro-Vitamin B5, it works to improve nail resilience and structure over time. Ideal for use on nails needing intensive repair, this hardener provides necessary support to prevent further breakage and promote healthier growth. Apply as a protective base coat for daily wear or as a treatment program for a complete nail restoration.