Eveline Nail Therapy 8 in 1 Sensitive Total Action Intensive Nail Hardener is a strengthening treatment designed for sensitive nails, especially for those with formaldehyde allergies. This 12ml product strengthens fragile or weakened nails prone to splitting, regenerates them, and adds shine to dull and damaged nails. Its special formula, enriched with nourishing ingredients, ensures nails remain strong and flexible, allowing them to grow longer and more beautiful. It effectively protects against cracking, breaking, and splitting, restoring nails' natural beauty and healthy appearance. To use, apply one layer directly to nails regularly.