Creative Nail Toughen UpWHAT IT IS:A strengthening 3-free base coat for thin, weak nails.WHAT IT DOES:Cross-links keratin in the natural nail.WHY YOU NEED IT:• Strengthens natural nails.• Improves nail Colour wearability.• Helps prevent surface staining of natural nails.• 3-free formula does not contain Formaldehyde, Toluene or Dibutyl Phthalate (DBP).Creative Nail Toughen Up