Make your nails resilient with SpaRitual Protein Boost Moisture Repair For Brittle Nails. Soy Protein prevents nail splitting by binding nail layers together. Cactus, Cucumber, and Oat lock in moisture to keep nails hydrated and healthy. Continued use of this nail repair will make nails more flexible, hydrated, and strong. Formulated without Formaldehyde, Toluene, and DBP.